Sea creatures. All marine animals directly or indirectly Amazonian river or freshwater dolphin

Option No. 8546551

When completing tasks with a short answer, enter in the answer field the number that corresponds to the number of the correct answer, or a number, a word, a sequence of letters (words) or numbers. The answer should be written without spaces or any additional characters. The answers to tasks 1-26 are a number (number) or a word (several words), a sequence of numbers (numbers).

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Indicate the numbers of sentences in which the MAIN information contained in the text is correctly conveyed. Write down the numbers of these sentences.

1) Since plant plankton - the basis of the food chain of marine animals and deep-sea organisms - exists in the upper layer of water, it is enough to pollute only part of the upper layer for all life in the ocean to die.

2) The life of marine animals and deep-sea organisms in the ocean largely depends on plant plankton, which is found in the upper layer of water.

3) Pollution of only part of the deep layer of the ocean cannot lead to the death of all life in the ocean.

4) Because deep sea organisms depend on animals living on the surface of the ocean, life is concentrated only in its upper layers.

5) The basis of the food chain of marine animals and deep-sea organisms is plant plankton, which is located only in the upper layer of water, so if at least part of the upper layer is polluted, then all life in the ocean will die.

Answer:

What word (combination of words) should be in place of the gap in the third sentence of the text?

Primarily

Besides,

As we see,

Answer:

Read the fragment of the dictionary entry, which gives the meaning of the word LIGHT. Determine the meaning in which this word is used in the first (1) sentence of the text. Write down the number corresponding to this value in the given fragment of the dictionary entry.

LIGHT, -а (-у), husband.

1. Radiant energy that makes the surrounding world visible; electromagnetic waves in the range of frequencies perceived by the eye. Sunny s. Electric with. S. from the lantern. C. truth(trans.). Face illuminated with inner light(trans.: became spiritualized).

2. This or that light source. Ignite with. Bring with. (lamp, candle). Get closer to the light. Stand against the world. View something. us.(so that it shines through). In daylight.

3. Illumination, the state when it is light. in the light(in the light, in the light). In windows with

4. In some expressions: dawn, sunrise (colloquial). To the light and to the light(before dawn). Neither s. no dawn(very early in the morning; colloquial). A little s.(barely dawn).

5. Use as an affectionate appeal (obsolete and in folk literature). C. you are my clear!

Answer:

In one of the words below, a mistake was made in setting the stress: the letter denoting the stressed vowel is highlighted INCORRECTLY. Write out this word.

most beautiful

get through

inquire

Answer:

In one of the sentences below, the underlined word is WRONGLY used. Fix it lexical error choosing a paronym for the highlighted word. Write down the chosen word.

To prepare a marinade for charcoal-roasted fish, SHAKEN the seeds from four or five cardamom pods, add a pinch of saffron and grind them in a mortar and salt.

The girl with a sharp movement threw back her bangs from her forehead and unexpectedly calmly and trustingly looked into Alexei's eyes.

The issuance of skates is carried out if the visitor of the rink has a passport or any other document that can be left as a pledge.

Analysts say that in the coming year the market valuable papers significant changes can be expected.

CHOOSE one or another direction, be guided strictly by the compass.

Answer:

In one of the words highlighted below, a mistake was made in the formation of the word form. Correct the mistake and write the word correctly.

FAVORITE PROFESSORS

MOST RESOLVED

in TWO HUNDRED meters

on their territory

PICKED APPLE

Answer:

Establish a correspondence between grammatical errors and sentences in which they are made: for each position of the first column, select the corresponding position from the second column.

GRAMMATICAL ERRORS

SUGGESTIONS

A) violation in the construction of a sentence with participial turnover

B) incorrect use of the case form of a noun with a preposition

C) an error in constructing a sentence with a participial turnover

D) violation of the connection between the subject and the predicate

E) an error in constructing a sentence with homogeneous members

1) Graduate students at the University of Weimar have created a computer projector that shows both movies and TV shows on any surface.

2) The engraver's hand with the tool, as a rule, moves little: lying on a special pillow, the plate moves.

3) Thanks to antibiotics, many diseases have ceased to be deadly to humans.

4) Having a lot of free time, the girls devoted it to reading books.

5) The athletes met and became friends with the people of Vancouver.

6) The fans, who came from many countries of the world, joyfully greeted the Olympic champions.

7) I would like to congratulate everyone who won the Olympiad in Canada.

8) Creating landscape sketches, artists capture the beauty of Russia.

9) Those who know more by virtue of their education or passion will fill in the gaps of others.

A	B	AT	G	D

Answer:

Determine the word in which the unstressed checked vowel of the root is missing. Write out this word by inserting the missing letter.

fencing

g ... rbarium

in...negret

vyzh...gat

dog... early

Answer:

Find a row in which the same letter is missing in both words. Write these words out with the missing letter.

without..skusny, trans..ransky;

pr .. cheered up, pr .. to turn;

from .. yan, interior ... er;

and .. draw, be .. valuable;

anti..monopolistic, pr..skillful.

Answer:

Write down the word in which the letter I is written in place of the gap.

kumach..vy,

heat

take over

delicious..nky

Answer:

Write down the word in which the letter E is written in place of the gap.

pay..shish

pasted

raska..shish

attach..sh

chasing .. chasing

Answer:

Identify the sentence in which NOT with the word is spelled CONTINUOUSLY. Open the brackets and write out this word.

These far (not) joyful events took us by surprise.

Some strange feeling, hitherto (un)experienced, suddenly seized me.

Historical stories told about the deeds of warrior princes, their struggle with external enemies and (un)ending strife.

The room was completely (not) lit.

Answer:

Determine the sentence in which both underlined words are spelled ONE. Open the brackets and write out these two words.

The eldest son, Anisim, came home very rarely, only on big holidays, (FOR) THEN often sent gifts with fellow countrymen and SO (SAME), like the middle one, Stepan, short letters.

Sergeev knew his work and loved it (FOR) THAT it was given to him, (FOR) THAT, and they considered him a good master at the factory.

(BY) WHAT do you judge a person's culture - by his manners, tastes, habits? And (FROM) WHAT are you so demanding of him?

They were sometimes silent for hours, FOR (THAT) each felt that both of them felt good - and (FOR) THAT is why it is good that they are together.

In the morning we went (IN) DOWN the village, and in the evening we moved (In) DEPTH of the grove.

Answer:

Indicate all the numbers in the place of which one letter H is written.

The Yu (1) beauty embarrassed (2) smiled and dropped the golden (3) powder (4) itsu from her hands.

Answer:

Set up punctuation marks. Indicate the numbers of sentences in which you need to put ONE comma.

1) Volodya gave his sister a basket of flowers and a box of chocolates and wished her happiness with all his heart.

2) More and more noisy songs and screams were heard through the streets.

3) I was frightened and began to ask Ivan Ignatich not to say anything to the commandant.

4) Microwaves shake the water molecules in the products and the energy of their vibrations is converted into heat.

5) It was always possible to meet some new people near Stasov, and he constantly, with a certain mystery in his voice, recommended them as great in the future.

Answer:

Having made a long circle along the newspaper lane in Kislovka (1), Levin again returned to the hotel and (2) putting his watch in front of him (3) sat down (4) waiting for twelve.

Answer:

Fill in all the missing punctuation marks: indicate the number(s) that should be replaced by a comma(s) in the sentence.

Margarita (1) unfortunately (2) could not come to the alumni meeting (3) however (4) promised to visit her teachers immediately after the summer session.

Answer:

Place all punctuation marks: indicate the number(s) that should be replaced by a comma(s) in the sentence.

For a long time, whales (1) observed (2) which (3) were previously managed by a few (4) were considered fish.

Answer:

Place all punctuation marks: indicate the number(s) that should be replaced by a comma(s) in the sentence.

When Ivan Aristarkhovich appeared at the door of the dressing room (1), he habitually leaned over (2) and (3) so all the actors got the impression (4) that their artistic director was very tall (5) although in fact the doorway was quite low.

Answer:

Edit the sentence: correct the lexical error, excluding superfluous word. Write out this word.

The expedition was successful until an iceberg blocked the ship's path.

Answer:

Which of the statements correspond to the content of the text? List the response numbers in ascending order.

1) Konstantin Nikolaevich and Anastasia Petrovna have been married for 35 years.

2) Over the years, Anastasia Petrovna began to treat her husband with arrogance.

3) Konstantin Nikolaevich is annoyed that his wife does not look after the house well.

4) Konstantin Nikolayevich felt embarrassed because of his irritation.

5) Anastasia Petrovna did not clean the house because she was sloppy.

(21) Cobwebs in the corners.

(22) − Where is the web?

look for cobwebs in the corners.

(29) − Are you blind, or what?

(According to S. A. Voronin*)

Answer:

Which of the following statements are true? Specify the answer numbers.

Enter the numbers in ascending order.

1) Sentence 16 clarifies the content of sentence 15.

2) Sentences 12-14 present the narrative.

3) In sentences 32−33, reasoning is presented.

4) Sentences 18-21 provide a description.

5) In sentences 43-44 there are no elements of description.

(1) No, not immediately, but somehow from time to time he began to notice cobwebs in the most hidden places, gray mounds of dust on the floor in the corners, a hard crumb stuck on the edge of a washed cup or plate. (2) “Only this was still not enough,” he thought irritably, “has it really been like this all my life, I just didn’t notice, and now, sitting in retirement, I see everything from nothing to do ...”

(4) She sat with her head bowed low over her sewing. (5) Recently, she has had some strange need to mend torn socks, put patches on washed towels. (6) No, she didn’t become at all the way he knew her all thirty-five years after the wedding. (7) Not at all like that.

(8) When she married him, her friends told her that he, Kostya, was not a couple for her. (9) For some reason, they considered him less significant compared to her. (10) But in the end - an apartment, a car, a summer house, and all this is him, and now he also helps his daughter, whose husband turned out to be a frivolous person, and his son has to help. (11) So if we talk about kindness, then here it is - not on impulse, but from month to month, when you deny yourself for the sake of children.

(12) Konstantin Nikolaevich looked at his wife. (13) She still sat with her head bowed low. (14) I put another patch. (15) Recently, she has had a lot of oddities. (16) At least these patches, and bright ones. (17) Then - squint your eyes, as if looking down on the one you are talking to.

(18) − Better take care of the house. (19) Dirt all around. (20) You have become sloppy.

(21) Cobwebs in the corners.

(22) − Where is the web?

(23) And again this vile squint.

(24) − Here, here, here! (25) − Konstantin Nikolaevich began to poke his finger at

(26) − It cannot be ... (27) − Anastasia Petrovna narrowed her eyes and became

look for cobwebs in the corners.

(28) - There's nothing there, you're just nitpicking, - she said to the usual tired

(29) − Are you blind, or what?

(30) Konstantin Nikolaevich jerked his head in irritation and went to his room. (31) I stood at the window, thoughtlessly looking out into the street. (32) “The devil knows what,” his heart boiled, “and she is still being ironic. (33) No, you have to go back and make her take off the web, poke her nose, otherwise you “nitpick” ... (34) And he went to his wife. (35) But what he saw made him freeze.

(36) Anastasia Petrovna stood in a corner and tensely, as happens with a poorly seeing person, peered at the walls, apparently looking for a web. (37) There was something pitiful, helpless in her face and in her whole figure.

(38) − Nastya! - Konstantin Nikolaevich called anxiously.

(39) She shuddered, turned around, and he saw her confused eyes. (40) They were wide open, then squinted, as if making an arrogant look.

(41) - I ... I do not see the web, - she said.

(42) "Don't you see?" he wanted to say. (43) He even saw this black thread from the door, quivering at the slightest movement of air. (44) But he was silent, suddenly realizing that his wife began to see badly and that she had long been no longer that dexterous, cheerful, young, but an elderly, if not old, woman, and said guiltily:

(45) − You're right, there really is no web... (46) Sorry...

(According to S. A. Voronin*)

* Sergey Alekseevich Voronin (1913–2002) - Russian Soviet prose writer.

Answer:

Write out synonyms from sentence 37.

(3) Konstantin Nikolaevich looked at his wife. (4) She sat with her head bowed low over her sewing. (5) Recently, she has had some strange need to mend torn socks, put patches on washed towels. (6) No, she didn’t become at all the way he knew her all thirty-five years after the wedding. (7) Not at all like that.

(18) − Better take care of the house. (19) Dirt all around. (20) You have become sloppy.

(21) Cobwebs in the corners.

(22) − Where is the web?

(23) And again this vile squint.

(24) − Here, here, here! (25) − Konstantin Nikolaevich began to poke his finger at

(26) − It cannot be ... (27) − Anastasia Petrovna narrowed her eyes and became

look for cobwebs in the corners.

(28) - There's nothing there, you're just nitpicking, - she said to the usual tired

(29) − Are you blind, or what?

(38) − Nastya! - Konstantin Nikolaevich called anxiously.

(39) She shuddered, turned around, and he saw her confused eyes. (40) They were wide open, then squinted, as if making an arrogant look.

(41) - I ... I do not see the web, - she said.

(45) − You're right, there really is no web... (46) Sorry...

(According to S. A. Voronin*)

* Sergey Alekseevich Voronin (1913–2002) - Russian Soviet prose writer.

(3) Konstantin Nikolaevich looked at his wife.

Answer:

Among sentences 30−38, find one(s) that is(-s) related to the previous one using possessive pronoun. Write the number(s) of this offer(s).

(18) − Better take care of the house. (19) Dirt all around. (20) You have become sloppy.

(21) Cobwebs in the corners.

(22) − Where is the web?

(23) And again this vile squint.

(24) − Here, here, here! (25) − Konstantin Nikolaevich began to poke his finger at

(26) − It cannot be ... (27) − Anastasia Petrovna narrowed her eyes and became

look for cobwebs in the corners.

(28) - There's nothing there, you're just nitpicking, - she said to the usual tired

(29) − Are you blind, or what?

(38) − Nastya! - Konstantin Nikolaevich called anxiously.

(39) She shuddered, turned around, and he saw her confused eyes. (40) They were wide open, then squinted, as if making an arrogant look.

(41) - I ... I do not see the web, - she said.

(45) − You're right, there really is no web... (46) Sorry...

(According to S. A. Voronin*)

* Sergey Alekseevich Voronin (1913–2002) - Russian Soviet prose writer.

(3) Konstantin Nikolaevich looked at his wife.

Answer:

Read the review snippet. It examines the linguistic features of the text. Some terms used in the review are missing. Fill in the gaps with the numbers corresponding to the number of the term from the list.

The author focuses on the complex relationships of the characters, which are revealed with the help of (A) _____ (sentences 18–29). The author conveys the feelings of Konstantin Nikolaevich with the help of (B) _____ (“boiling ... at the heart” in sentence 32, “poke your nose” in sentence 33). The image of Anastasia Petrovna was created using such lexical means, like (C)_____ (“something pathetic” in sentence 37, confused eyes” in sentence 39), as well as (D)_____ (sentence 44).

List of terms:

1) metonymy

2) epithets

4) metaphor

5) appeal(s)

6) antithesis

7) comparison

8) introductory words

9) phraseological units

Write down the numbers in response, arranging them in the order corresponding to the letters:

A	B	AT	G

(18) − Better take care of the house. (19) Dirt all around. (20) You have become sloppy.

(21) Cobwebs in the corners.

(22) − Where is the web?

(23) And again this vile squint.

(24) − Here, here, here! (25) − Konstantin Nikolaevich began to poke his finger at

(26) − It cannot be ... (27) − Anastasia Petrovna narrowed her eyes and became

look for cobwebs in the corners.

(28) - There's nothing there, you're just nitpicking, - she said to the usual tired

(29) − Are you blind, or what?

(38) − Nastya! - Konstantin Nikolaevich called anxiously.

(39) She shuddered, turned around, and he saw her confused eyes. (40) They were wide open, then squinted, as if making an arrogant look.

(41) - I ... I do not see the web, - she said.

(45) − You're right, there really is no web... (46) Sorry...

(According to S. A. Voronin*)

* Sergey Alekseevich Voronin (1913–2002) - Russian Soviet prose writer.

(18) − Better take care of the house. (19) Dirt all around. (20) You have become sloppy.

(21) Cobwebs in the corners.

(22) − Where is the web?

The volume of the essay is at least 150 words.

A work written without relying on the text read (not on this text) is not evaluated. If the essay is a paraphrase or a complete rewrite of the source text without any comments, then such work is evaluated with 0 points.

Write an essay carefully, legible handwriting.

(18) − Better take care of the house. (19) Dirt all around. (20) You have become sloppy.

(21) Cobwebs in the corners.

(22) − Where is the web?

(23) And again this vile squint.

(24) − Here, here, here! (25) − Konstantin Nikolaevich began to poke his finger at

(26) − It cannot be ... (27) − Anastasia Petrovna narrowed her eyes and became

look for cobwebs in the corners.

(28) - There's nothing there, you're just nitpicking, - she said to the usual tired

(29) − Are you blind, or what?

(38) − Nastya! - Konstantin Nikolaevich called anxiously.

(39) She shuddered, turned around, and he saw her confused eyes. (40) They were wide open, then squinted, as if making an arrogant look.

(41) - I ... I do not see the web, - she said.

(45) − You're right, there really is no web... (46) Sorry...

(According to S. A. Voronin*)

* Sergey Alekseevich Voronin (1913–2002) - Russian Soviet prose writer.

Solutions to tasks with a detailed answer are not checked automatically.
On the next page, you will be asked to check them yourself.

Finish testing, check answers, see solutions.

The answers to tasks 1–24 are a word, a phrase, a number or a sequence of words, numbers. Write your answer to the right of the task number without spaces, commas or other additional characters.

Read the text and do tasks 1-3.

(1) All marine animals depend directly or indirectly on plant plankton as the basis of the food chain, and plant plankton can only exist where sufficient sunlight penetrates the water column for photosynthesis. (2) Below this layer, life rapidly declines, as deep-sea organisms are entirely dependent on the remains of plants and animals coming from above. (3) ______ is enough to pollute only a small part of the top layer to kill all life in the ocean.

Which of the following sentences correctly conveys the MAIN information contained in the text?

1. Since plant plankton - the basis of the food chain of marine animals and deep-sea organisms - exists in the upper layer of water, it is enough to pollute only part of the upper layer for all life in the ocean to die.

2. The life of marine animals and deep-sea organisms in the ocean largely depends on plant plankton, which is found in the upper layer of water.

3. Pollution of only part of the deep layer of the ocean cannot lead to the death of all life in the ocean.

4. Pollution of only a part of the upper layer of water leads to the death of all life in the ocean, since it is in the upper layer of water that the basis of the food chain of marine animals and deep-sea organisms - plant plankton - exists.

5. Since deep-sea organisms depend on animals living on the surface of the ocean, life is concentrated only in its upper layers.

Which of the following words (combinations of words) should be in place of the gap in the third (3) sentence of the text? Write down this word (combination of words).

1. Despite this,

2. Therefore

3. Contrary to this,

4. Maybe

5. On the contrary,

Read the fragment of the dictionary entry, which gives the meaning of the word LIFE. Determine the meaning in which this word is used in the third (3) sentence of the text. Write down the number corresponding to this value in the given fragment of the dictionary entry.

LIFE, and, well.

1. The totality of phenomena occurring in organisms, a special form of the existence of matter. Origin of life on Earth. J. Universe. Laws of life.

2. The physiological existence of man, animal, all living things. J. plants. Risk your life. Save someone. and.

3. The time of such an existence from its inception to the end, as well as in some. his period. Short, long. At the beginning, at the end of life.

4. The activity of society and man in one or another of its manifestations. Public well. Family well. Spiritual well. Seething well.

In one of the words below, a mistake was made in setting the stress: the letter denoting the stressed vowel is highlighted INCORRECTLY. Write out this word.

In one of the sentences below, the underlined word is WRONGLY used. Correct the mistake and write the word correctly.

1. The flower beds and walkways on the site were originally created for decorative purposes, and FENCE them with a border means to destroy the effect of the decor that they create.

2. For many kilometers along the ocean coast, a narrow strip of SANDY beach stretched, to which exotic shrubs descended along the hillside, creating a shadow.

3. I learned gymnastics, in which a sharp INhale is performed when the entire body moves forward.

4. The right choice of car is the key to your safety.

5. The head of the department provided patients with a COMFORTABLE stay in the hospital.

In one of the words highlighted below, a mistake was made in the formation of the word form. Correct the mistake and write the word correctly.

NIGHT CALL

YEAR 2000

HIGHEST Rise

Establish a correspondence between the sentences and the grammatical errors made in them: for each position of the first column, select the corresponding position from the second column.

SUGGESTIONS	GRAMMATICAL ERRORS
A) Preparing for a hike, a lot depends on the organizers.	1) incorrect use of the case form of a noun with a preposition
B) The biologist Malyshev made interesting observations, the results of which he outlined a few years later in his article "Topographic abilities of insects."	2) violation of the connection between the subject and the predicate
C) Thanks to the understanding of my parents and friends, I managed to overcome difficulties.	3) violation in the construction of a proposal with an inconsistent application
D) Andryushin remained for a long time on the terrace, admiring the dazzling flashes of lightning over the garden.	4) an error in constructing a sentence with homogeneous members
E) After the performance, the entire ensemble went down from the stage.	5) incorrect construction of a sentence with a participial turnover
	6) violation in the construction of a sentence with participial turnover
	7) incorrect sentence construction with indirect speech.

Write your answer in numbers without spaces or other characters.

Determine the word in which the unstressed checked vowel of the root is missing. Write out this word by inserting the missing letter.

t..oretic

zabl.. become

elect..rational

per. .odic

suppose

Determine the row in which the same letter is missing in both words in the prefix. Write these words out with the missing letter.

and .. walking, ra .. beat

pr.. old, pr.. nickname

pr..touched, pr..call

to..write, o..gave

eclipse

orange..out

plush..vy

honor..vaya

cheap .. low

Write down the word in which the letter I is written in place of the gap.

recognizing..my

cursed..

sure..

hate..my

Identify the sentence in which NOT with the word is spelled CONTINUOUSLY. Open the brackets and write out this word.

1. Rooks walked in the (NOT) YELLOWED rye.

2. In the house, (NOT) LOOKING at the evening coolness, it was stuffy.

3. Leaving, the father (NOT) CLOSED the windows, and the house became cool.

4. Sonya ran out into the street with her head (NOT) COVERED with a scarf.

Determine the sentence in which both underlined words are spelled ONE. Open the brackets and write out these two words.

1. (C) START ask who has seen this book. (PO) Apparently, no one except Seryozha could take it!

3. (B) DURING the whole morning, Kirill did not leave the feeling (AS) AS if the air was washed with spring water.

4. (AT) DALIE the slender sails of fishing boats rose, and they seemed pink, BECAUSE (THAT) they were illuminated by the setting sun.

5. Many ancient works that were rewritten (B) DURING the VIII-IX centuries were preserved (B) FLESH until recent years.

Indicate all the numbers in the place of which HN is written.

The term "herbarium" appeared in the 16th century to refer to arid (1) plants, collected (2) for a collection and intended (3) for scientific work on floristry, breeding.

Set up punctuation marks. Indicate the numbers of sentences in which you need to put ONE comma.

1. A good specialist is based on fundamental knowledge and is distinguished by the ability to find the right information and the ability to work hard.

2. For festive illumination, both electric garlands and lanterns were used.

3. At night the wind gets angry and knocks on the window.

4. In the thickets, corncrakes or some other birds cried plaintively all night.

5. Coastal grasses were warmed by damp heat and countless clouds of pale green moths hovered low above them.

The sun (1) bypassing the house (2) looked under the pines and fir trees (3) with its branches (4) shading the balcony.

Place punctuation marks: indicate all the numbers in the place of which commas should be in the sentences.

A.S. Pushkin called M.V. Lomonosov "our first university". All his scientific achievements M.V. Lomonosov (1) as you know (2) tried to put into practice. So (3) for example (4) he created the mosaic “Battle of Poltava”, having developed methods for grinding and casting smalt.

Place punctuation marks: indicate all the numbers in the place of which commas should be in the sentence.

Literary parody (1) whose main task (2) (3) is irony (4) has served as a means of controversy since the times of Lomonosov and Sumarokov.

Place punctuation marks: indicate all the numbers in the place of which commas should be in the sentence.

The minutes of waiting dragged on painfully long (1) and (2) when the shooters got close to eight (3) it already seemed to Sergeev (4) that he had spent an eternity on this bench.

Edit the sentence: correct the lexical error by excluding the extra word. Write out this word.

The heroes of the film are not similar to each other, what unites them together?

Read the text and complete tasks 21-26.

(1) Money is a means of distributing material goods according to work, and by no means the purpose of existence, not the basis of the prestige and influence of the individual.

(2) However, with all the subservience of its role, money is constantly present in our relationships, and issues related to money represent a wide field for the formation of such qualities as honesty, nobility, modesty, delicacy, commitment. (3) In addition, cultivating a correct view of the role of money consists in instilling in children their true meaning, showing their real place in a number of basic life values: knowledge, creative work, spiritual and intellectual communication. (4) Probably, this is why today parents are very concerned about the influence of the family on the attitude to material values, to money. (5) What should and what can the family do in order to prevent manifestations of petty-bourgeois self-interest, possessiveness, “materialism” in children? (6) What should and what can a family do so that children who grow up in material prosperity, surrounded by many good and beautiful things, do not find themselves in spiritual captivity?

(7) At first, no one in the family attached importance to the fact that little Alyonka, to the request: “Give me a toy,” invariably answered with a decisive refusal, energetically pressing a rattle or a rubber animal to her chest. (8) Soon Alyonka's character began to cause some concern: she began to constantly quarrel with children over toys.

(9) Condescending acquaintances delicately reassured worried parents: “Come on, it's a child! (10) Usual childish greed. (11) Don't worry.

(12) There is a dubious theory that classifies the so-called childish greed as a natural, almost mandatory age-related feature. (13) Indeed, many "little greedy" grow up as quite normal, even kind people. (14) Under the influence of upbringing and environment, sometimes without a special parental "sight" in the emerging character they take over positive features- kindness, generosity. (15) But this is not always the case. (16) Large greedy grow, as a rule, from small greedy.

(17) It was decided to declare war on Alyonina's greed - a bloodless and "nervous" war. (18) Yes, Alena had no bad examples before her eyes, in her loved ones she could not observe either pettiness or self-interest. (19) But, apparently, more illustrative examples of kindness and not joking, but serious explanations were needed.

(20) Now in the family they tried as often as possible to show each other signs of attention with gifts, and with Alena they often discussed the upcoming gift to relatives or friends. (21) They tried to make the girl see how loved ones easily, with pleasure give in to each other even what they wanted to take for themselves. (22) My grandmother bought a blouse, figured it out - and it fits in size, and it’s good for her face. (23) And in the evening she offered her daughter-in-law, to whom this blouse suited more. (24) Another time, my mother came in a new scarf, but put it on my grandmother's coat, saw how the scarf fits well, and gave it to my grandmother.

Oceans (Atlantic, Pacific, Indian, Arctic and Antarctic) with their basins occupy almost 70% of the earth's surface.

The seas are the largest and "dense" ecosystems, because, obviously, under each square meter The surface contains phytoplankton and some forms of life are distributed to the depths. Biologically, they are also the most diverse.

marine organisms

exhibit a vast array of adaptations ranging from structures that allow tiny plants to stay in the upper layers of the water, to huge mouths and the stomachs of deep-sea fish living in a dark, cold world where food organisms are large, few and widely scattered in space.

Areas of the continental shelf are very productive, especially where there is vertical circulation; "fruits of the sea", collected here, are an important source of protein and minerals for humans.

However, the vast expanses of deep water should be considered semi-desert with a significant overall energy flow (due to the size of the area), but with a small power per unit area.

The autotrophic layer (light zone) is so small compared to the heterotrophic layer that the supply of nutrients in the first layer is very limited. Even if a person cannot get much food products from deep water, nevertheless, the seas are important for him, as a giant regulator, contributing to the mitigation of the Earth's climate and maintaining a favorable concentration of carbon dioxide and oxygen in the atmosphere.

Deep water is also a repository of valuable minerals carried from land.

Physical factors determine life in the ocean. Waves, ebbs and flows, currents, salinity, temperature, pressure, and light intensity largely determine the composition of biological communities, which, in turn, have a significant impact on the composition of bottom sediments and dissolved gases. The food chains of the sea begin with the smallest known autotrophs and end with the largest animals (giant fish, cephalopods and whales).

The study of physics, chemistry, geology and biology of the sea is being combined into a "super-science" called oceanography, which is gaining importance as an important international force.

Although the exploration of the sea is not as expensive as the exploration of space, significant funds are needed for ships, coastal laboratories, equipment and specialists. The main scientific work is now carried out by a relatively few large institutions supported by government funds. But despite the significant research work, the seas still keep many secrets that will worry humanity for a long time to come.

One of the mysteries that will soon be solved concerns the "deep scattering layer", the phantom barrier, or false bottom, which reflects sound waves ship echo sounders.

The layer appears to be composed of organisms, but what these organisms are is not yet known.

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The harm caused national economy marine animals and plants is immeasurably small compared to the benefits they bring.

It is possible to distinguish between direct and indirect harm.

We have already talked about the harm that; cause sea stars to oyster and mussel farms, Chinese crab to fish farms and earthen shore facilities, some other crustaceans to fish caught in the nets and the nets themselves. Many other similar examples could be cited.

So, for example, a tiny sponge of klion dissolves lime and grinds it in the shells of mollusks, especially oysters (Fig.

159), small holes, causing the death of molluscs.

Figure 159. Oysters poached with a kliona sponge.

In some parts of the sea, the massive development of sponges on the bottom makes it extremely difficult to work with a fishing trawl.

We also have such areas in the Barents Sea. Sometimes organisms develop strongly - competitors in food to commercial fish. So, for example, in our southwestern part of the Barents Sea, ctenophores develop in huge numbers, eating out crustaceans of calanus (Fig.

160). The herring that comes here later for fattening does not find food here.

Figure 160 Ctenophores eating calanuses.

Not all sea plants and not always play a positive role for a person. There are many forms in both plankton and benthos that are not consumed by other organisms, and sometimes disgust them.

Migration routes of herring sometimes undergo changes that are unexpected for industrialists and very difficult for the fishery.

It has already been reported that the reason for this may be the massive development of the "bloom" of the unicellular planktonic algae pheocistis (Fig.

Figure 161 Flowering water flagella pheocystis.

Figure 162. Pheocystis bloom area in the North Sea and measurement of herring migration routes.

Plants that are useless to humans and not fodder for various animals have a negative significance for humans already because, choosing a lot of nutrients from the water for their development, they themselves are not directly used by anyone for food and are, therefore, weeds.

It is very likely that from this point of view, the thickets of deltaic spaces play a negative role, sometimes producing tens of millions of tons of hard plants a year that are not food for anyone, but take away from the river water huge masses of nutrients that accumulate in the lower layers and on geological periods withdrawn from the cycle. Thickets of macrophytes in the coastal zone of the seas can serve as a great obstacle in the maneuvering of small vessels, such as boats and submarines, winding up on the propeller and rudder.

Many marine animals threaten human health and even life.

Severe burns are caused by some jellyfish and siphonophores.

Russian language tests with answers. USE-2016. Option 1 part 1

If a swimmer receives such a burn on deep place, he may die due to temporary paralysis resulting from the burn. A similar effect can be caused by a discharge of electricity obtained from fish such as electric eel or electric ray (Fig. 163).

Figure 163 Electric eel and stingray - sea cat, and at the top of the jellyfish gonionemus.

The stingray - a sea cat - can inflict heavy injections with its needle, resulting in very painful, long-lasting wounds.

AT warm seas human life is threatened by some sharks.

However, all these forms of harm are much inferior to the negative activity of certain organisms that destroy stone and wooden underwater structures, or those that grow on the underwater parts of ships and other hydraulic structures.

On the harmful activity of wood borers and stone borers and on the phenomena of fouling in the sea, we will dwell in somewhat more detail.

Classification of marine organisms according to habitat conditions and their role in rock formation.

A variety of animals and plants are concentrated in the thickness of the waters of the oceans.

Representatives of all types and classes of organisms live in the ocean: there are 150 thousand animal species and 50 thousand plant species.

According to the habitat conditions among marine organisms, there are:

— plankton (from Greek.

wandering) organisms passively floating in the water column, kept in the water in suspension, are divided into phytoplankton(unicellular plants) and zooplankton (protozoa - crustaceans, worms, etc.);

— nekton (from Greek.

floating) - actively swimming organisms (fish, seals, cetaceans, etc.), the mass of nekton is 23 times less than the mass of plankton;

— benthos (from Greek depth) - the totality of organisms living on the seabed is divided into mobile benthos (sea urchins, stars, many mollusks, some fish) and immobile or sessile benthos (corals, bryozoans, sponges, algae, etc.);

Rock-forming role

Rock-forming fossils are those that make up 30-40% or more of the total volume of deposits.

Both skeletal remains and waste products take part in the formation of an organogenic rock. An indispensable condition for rock formation is the "crowded" nature of the habitat of organisms. This property is possessed mainly by attached, inactive and burrowing forms that form thickets, banks, reefs and other mass settlements.

Already during their lifetime, such organisms constitute the main part of the biocenosis. Among the mineral skeletons of fossils, the most common are calcareous, siliceous, and phosphate rocks. There are especially many organogenic rocks of calcareous (carbonate) composition: limestones, marls, writing chalk, dolomites. For the name of organogenic rocks, the adjective is taken from those groups of organisms that are the main rock-forming, for example, limestones - crinoid, foraminiferal, archaeocyanate, brachiopod, ostracod, etc.

e. Calcareous rocks, consisting of accumulations of bivalve shells, are called shells, oyster horizons. Organogenic limestones can also arise as end products of the vital activity of cyanobionts (blue-green algae) and bacteria. From them remain layered sheet, nodular, concentric formations - stromatolites, oncolites, catagraphies.

Plants with carbonate skeletons give rise to algal, char and coccolith limestones (writing chalk). Mineral skeletons of siliceous composition are less common than carbonate ones. They are known in unicellular animals, like radiolarians, in multicellular primitive animals (sponges), and also in lower algae (diatoms).

Siliceous rocks - radiolarites, consist of radiolarian skeletons, spongoliths - from sponge spicules, diatomites - from diatom valves.

Phosphate skeletons in pure form are rare, but calcium phosphate CaPO4 as an impurity or main constituent is known in many organisms.

Due to the concentration of biogenic phosphate, deposits of phosphorites arise. In the Moscow region, the centers of phosphoritization are the shells of Late Jurassic ammonoids, and in Estonia, the shells of brachiopods of the Ordovician genus Obolus.

The phosphate component is concentrated in the form of concretions, oolites, and nodules.

Due to the vital activity of bacteria, ferruginous, manganese, cuprous and sulfide deposits are formed, such as ferruginous quartzites (jespilites) of Krivoy Rog, cuprous sandstones of Dzhezkazgan. Bacteria are involved in the accumulation of bauxites and phosphorites.

In organic rock formation, the most big role play higher plants.

Their massive accumulations during certain burial processes lead to the occurrence of combustible minerals (caustobioliths) such as peat, coal, oil, oil shale, gas. The origin of oil and gas is associated with a deep destruction of the primary organic composition caused both by the vital activity of bacteria and cyanobionts, and by geological processes.

Resins (amber) are formed due to the vital activity of higher plants. Organisms also take part in the formation of special calcareous landforms of the oceans and seas - reef structures. various types: coastal and barrier reefs, atolls, biostromes, bioherms. Reef structures have a complex structure. They consist of a complex of calcareous rocks: organogenic, detrital-organogenic and chemogenic. Reef structures rise in the relief in the form of ridges, hills and other uplifts.

In the formation of fossil and modern reefs take part various organisms. In the Precambrian, reef-forming organisms were stromatolites; in the Cambrian, archaeocyates; from the Late Ordovician to the Permian, stromatoporates, tabulates, rugoses, and sponges; six-pointed corals and bryozoans. Brachiopods also took part in the formation of Permian reefs, and bivalves took part in the formation of Cretaceous reefs.

Throughout the Phanerozoic, calcareous red and green algae participated in the structure of reefs. Fossil reefs served as collectors for oil and gas (Devonian oil fields of Orenburg, Perm, Gomel). In addition, underground fresh and mineralized waters can accumulate in fossil reefs.

Dynamics of sea waters.

Ocean waters are in constant motion.

There are two main types of movement of the waters of the oceans - unrest and currents.

ocean waves

Excitement is the oscillatory movement of water. It is perceived by the observer as the movement of waves on the surface of the water. In fact, the water surface oscillates up and down from the average level of the equilibrium position.

The shape of waves during waves is constantly changing due to the movement of particles along closed, almost circular orbits.

Each wave is a smooth combination of elevations and depressions. The main parts of a wave are: crest- the highest part; sole - the lowest part; slope - profile between the wave crest and wave trough.

The line along the crest of a wave is called wave front(Fig. 1).

Rice. 1. The main parts of the wave

The main characteristics of waves are height - the difference between the levels of the crest and bottom of the wave; length - the shortest distance between adjacent crests or wave bottoms; steepness - the angle between the wave slope and the horizontal plane (Fig.

Rice. 1. Main characteristics of the wave

Waves have very high kinetic energy.

Everyone was shocked when the dead sperm whale was opened

The higher the wave, the more it contains kinetic energy(proportional to the square of the increase in height).

Under the influence of the Coriolis force, on the right downstream, far from the mainland, a water wall appears, and a depression is created near the land.

wind waves arise as a result of wind waves friction at the border of air and water.

The height of wind waves does not exceed 4 m, but during strong and protracted storms it increases to 10-15 m and higher. The highest waves - up to 25 m - are observed in the westerly winds of the Southern Hemisphere.

2. Wind waves and surf waves

A wave near the coast, mainly in shallow water, based on translational movements, is called surf(see Fig. 2).

deep waves occur at the boundary of two water layers with different properties.

They often occur in straits, with two levels of flow, near river mouths, at the edge of melting ice. These waves mix sea water and are very dangerous for sailors.

Tsunami arise under the influence of underwater shocks and coastal earthquakes.

These are very long and low waves in the open ocean, but the force of their propagation is quite large. They move very high speed. Near the coasts, their length is reduced, and the height increases sharply (on average, from 10 to 50 m). Their appearance entails human casualties. First, the sea retreats several kilometers from the shore, gaining strength for a push, and then the waves splash onto the shore at an interval of 15-20 minutes at great speed (Fig.

Rice. 3. Tsunami transformation

seismic belt Pacific Ocean is the main area of tsunami formation.

tidal waves- These are the movements of ocean waters, performed under the influence of the tide-forming forces of the Moon and the Sun.

Feedback sea water on the tide - low tide.

Even with a calm surface, there is excitement in the thickness of the ocean waters.

These are the so-called internal waves - slow, but very significant in scope, sometimes reaching hundreds of meters. They arise as a result of external action on a vertically heterogeneous mass of water. In addition, since the temperature, salinity and density of ocean water do not change gradually with depth, but abruptly from one layer to another, specific internal waves arise at the boundary between these layers.

sea currents

- permanent or occasional streams in the thickness oceans and seas.

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LESSON 15
Read the text and complete tasks 1-3.

(3) it is enough to pollute only a small part of the top layer to kill all life in the ocean.

1. Which of the following sentences correctly conveys the MAIN information contained in the text?
1) Since plant plankton - the basis of the food chain of marine animals and deep-sea organisms - exists in the upper layer of water, it is enough to pollute only part of the upper layer for all life in the ocean to die.
2) The life of marine animals and deep-sea organisms in the ocean largely depends on plant plankton, which is found in the upper layer of water.
3) Pollution of only part of the deep layer of the ocean cannot lead to the death of all life in the ocean.
4) Pollution of only part of the upper layer of water leads to the death of all life in the ocean, since it is in the upper layer of water that the basis of the food chain of marine animals and deep-sea organisms - plant plankton - exists.
5) Since deep-sea organisms depend on animals living on the surface of the ocean, life is concentrated only in its upper layers.

Which of the following words (combinations of words) should be in place of the gap in the third (3) sentence of the text? Write down this word (combination of words).
Despite this, Therefore, Despite this, Maybe, On the contrary,

3. Read the fragment of the dictionary entry, which gives the meaning of the word LIFE.

Determine the meaning in which this word is used in the third (3) sentence of the text. Write down the number corresponding to this value in the given fragment of the dictionary entry.
LIFE, and, well.
1) The totality of phenomena occurring in organisms, a special form of the existence of matter.

Origin of life on Earth. J. Universe. Laws of life.
2) The physiological existence of man, animal, all living things. AND.

USE-2017-Russian. Option 35

plants. Risk your life. Save someone. and.
3) The time of such existence from its inception to the end, as well as in some n. his period. Short, long. At the beginning, at the end of life.
4) The activity of society and man in one or another of its manifestations. Public
and. Family well. Spiritual well. Seething well.

4. In one of the words below, a mistake was made in the formulation of stress: the letter denoting the stressed vowel is highlighted INCORRECTLY.

Write out this word.
lay cakes Adolescence raising orphans

5. In one of the sentences below, the highlighted word is WRONGLY used. Correct the mistake and write the word correctly.
The flower beds and walkways on the site were originally created for decorative purposes, and FENCE them with a border means to destroy the effect of the decor they create.
A narrow strip of SANDY beach stretched for many kilometers along the ocean shore, to which exotic shrubs descended along the hillside, creating a shadow.
I learned gymnastics, in which a sharp INhale is performed when the entire body moves forward.
The right choice of car is the key to your safety.
The head of the department provided patients with a COMFORTABLE stay in the hospital.

In one of the words highlighted below, a mistake was made in the formation of the word form. Correct the mistake and write the word correctly.

Establish a correspondence between sentences and grammatical errors made in them: for each position of the first column, select the corresponding position from the second column

SUGGESTIONS
A) Preparing for a hike, a lot depends on the organizers.
B) The biologist Malyshev made interesting observations, the results of which he outlined a few years later in his article "Topographic abilities of insects."
C) Thanks to the understanding of my parents and friends, I managed to overcome difficulties.
D) Andryushin remained for a long time on the terrace, admiring the dazzling flashes of lightning over the garden.
E) After the performance, the entire ensemble went down from the stage.

GRAMMATICAL ERRORS
1) incorrect use of the case form of a noun with a preposition
2) violation of the connection between the subject and the predicate
3) violation in the construction of a proposal with an inconsistent application
4) an error in constructing a sentence with homogeneous members
5) incorrect construction of a sentence with a participial turnover
6) violation in the construction of a sentence with participial turnover
7) incorrect construction of a sentence with indirect speech with the corresponding letters.

20 21 22 23 24 25 26 27 … 32

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Informational resources BioDat

5. Ecosystems of the seas and coastal ecosystems

5.1.
General characteristics and features of ecosystems

Russia is the largest maritime power in the world. The shores of Russia are washed by the waters of 13 seas (Baltic, Barents, White, Kara, Laptev, East Siberian, Chukchi, Bering, Okhotsk, Japanese, Caspian, Azov, Black).

They belong to three oceans - the Atlantic, the Arctic and the Pacific. Russia has the longest continental coastline in the world, amounting to about 60,000 km (Fig. 36).

Rice.

36. Russia is the largest maritime power in the world

The conservation of the biodiversity of marine and coastal ecosystems and the organization of the sustainable use of marine biological resources are impossible without a systematic consideration of them as integral systems and an understanding of the phenomena and processes occurring in them. Marine ecosystems are complex multilevel formations, they cover the entire multi-kilometer water column (pelagial) and the seabed (benthal).

Within these ecosystems, thanks to food chains, passive and active migrations of organisms over many hundreds and thousands of kilometers, colossal flows of matter and energy are carried out - from plankton and benthos through fish to birds and marine mammals.

The most active life activity of the biota is confined to upwelling zones, sea ice edges and polynyas, estuaries of large rivers, areas of underwater hydrotherms, and peaks of the seabed topography.
When developing measures for the conservation of marine biodiversity, it is necessary to take into account the long-term dynamics of marine ecosystems due to climatic fluctuations and life cycles marine biota.

Fluctuations in the number of individual generations of marine fauna reach enormous values, and as in commercial species, and in species not subject to fishing. Global climate change is fundamentally affecting the bioproductivity of the seas.

Sharp climatic anomalies are of particular importance for the functioning of marine ecosystems. It is during these periods that the mismatch of trophic and other intra-ecosystem relationships occurs.

Notebook part 2. Notebook for preparing for the exam in the Russian language 2 part 10 grade 2 semester theory

These processes are of extreme importance today - against the background of the growing instability of the climate system of the Northern Hemisphere.
An important role in the rhythm of the biota is played by inter- and intra-secular climate fluctuations, for example, cold hydrological years, which have a cycle of 11, 21, 33, 90 or more years.

Only during the 20th century 4 times (1902, 1933, 1965, 1998, 1999) the usually non-freezing Kola Bay froze or anomalous "ejections" of icebergs from the areas of their usual drift in the Barents Sea occurred.
Marine ecosystems are particularly complex due to the fact that the main species of fauna have different breeding cycles.

For example, sturgeons do not breed annually. They go to spawn at the age of 10-18 years, the intervals between spawning fluctuate quite widely, on average about 4-5 years. Most species marine mammals non-annual offspring are also inherent.

On the other hand, many species of fish breed annually or 1-2 times in a lifetime.
Natural periodic fluctuations in the number of fish generations and climatic changes can coincide in time and have a complex effect that is difficult to predict.

When the periods of their low productivity coincide with intensive fishing, a rapid collapse of populations occurs. Examples are the dramatic events of the almost complete disappearance for many years and decades of the Atlantic herring, the Barents Sea capelin, and the polar cod.
There is convincing evidence that the dynamics of the stocks of species even under anthropogenic pressure depends not only on intensive fishing, but also on the variability of natural conditions, primarily climate and oceanological ones.

Thus, the current decline in the stocks of Japanese kelp in coastal waters was associated with unfavorable hydrological conditions, and then with irrational fishing. Especially unfavorable for this species were sharp fluctuations in temperature, which had a detrimental effect on zoospores and gametophytes, which slowed down the process of restoring algae stocks.

Powerful ocean currents have a huge impact on the dynamics of marine ecosystems. So the influx of water from the Atlantic, causing changes in temperature and salt balance, is one of critical factors affecting the productivity of the Barents and Baltic Seas.

For example, in the 1970s and 1980s in the North Atlantic, a significant salinity anomaly was observed, which reached Barents Sea with the waters of the North Atlantic Current 7 years after its inception. The interannual minimums and maximums of water temperature and salinity on the shelf of this sea are associated with a powerful influx of this cold, relatively fresh water.
The hydrochemical regime, especially salinity, plays a vital role in the enclosed southern seas and the Baltic.

Caspian and Sea of Azov- these are brackish-water basins, the salinity of which (up to 10-13% o) is almost three times less than the normal oceanic salinity (35% o). For the Black Sea, typical salinity values are 15-19%o. In the Baltic basin, water salinity fluctuates over a wider range - from 5-9%o to 10-14%. AT recent times water desalination in the Baltic.
Even minor changes in salinity radically affect the local biota.

For example, the shortage of fresh water in the Sea of Azov as a result of river regulation caused an increase in the salinity of its waters by an average of 3%.

For the ocean, this is only a tenth, and for the Sea of \u200b\u200bAzov - a third of the norm. As a result, the biomass of the Black Sea jellyfish increased sharply, and the structure of biocenoses was disturbed.

In the Arctic seas during the polar day, organisms receive almost an annual norm of solar radiation. Anomalous excess of ultraviolet radiation doses through the so-called "holes" in the ozone layer can damage the genetic fund of aquatic organisms. When exposed to high doses of ultraviolet, a significant decrease in the growth rate is observed, up to its complete suppression and death of organisms.

Particularly susceptible to the damaging effects of ultraviolet radiation are organisms that are on early stages development. Observed in last years in the Barents Sea, ultraviolet radiation levels significantly reduce the growth rate of algae (for some species by 80%) and reduce the possibility of natural reproduction of almost all mass species of Barents Sea algae.

Other dangers operate in the southern seas natural phenomena. The shallow Sea of Azov is most affected by dust storms and very strong surge fluctuations in sea level.
Even more striking are the cyclic changes in the level of the Caspian Sea.

In the 19th and 20th centuries the range of fluctuations here reached 3 m (up to 15 cm per year). The well-known and widely discussed in the 60-70s, the drop in sea level was replaced in 1978 by its increase, but in 1997 another decrease in the level began.

Such large-scale fluctuations in sea level lead to significant ecosystem changes and changes in fish productivity in the Northern Caspian and the Volga delta. During periods of sea level rise, there is an increase in productivity.
The Black Sea is a completely unique system.

This is the largest reservoir of hydrogen sulfide, which saturates waters deeper than 70-150 m. Here, beyond these depths, there is no rich benthic fauna characteristic of other seas.
In terms of biodiversity, the first place among the seas of Russia is occupied by the seas of the Far East, in particular the Sea of Japan off the coast of southern Primorye; the biodiversity of the Far Eastern seas of Russia generally decreases from south to north.

Then follow the northern seas, in which biodiversity decreases from the west and east, from the Barents and Chukchi seas, to the East Siberian. This is followed by the Black and Caspian Seas within the borders of Russia and, in the last places, the Azov and Baltic Seas.

On the contrary, the Caspian Sea is the richest in local endemics, followed by the Far East (especially the middle Kuriles and, to a lesser extent, the north of the Sea of Okhotsk), and in the Azov and Baltic Seas there are no endemics of Russian waters at all.

Table 18. Assessment of the species richness of the main groups of organisms in the coastal marine ecosystems of Russia

Sea coasts are located in almost all natural areas Russia - from the polar deserts and arctic tundra to Far Eastern broad-leaved forests, semi-deserts of the Caspian coast and xerophilic redwoods of the Mediterranean type on the Black Sea coast.

The sea coast of Russia is represented extremely a wide range types of coastline, which is important for the formation of biodiversity of coastal ecosystems.
Coasts as zones of separation of land and marine ecosystems have an exceptional biological diversity.

Thus, regions with highest level species richness of flora and fauna: in the Far East, local flora and fauna of mammals reach 1200 and 75 species per 100 km2, respectively, on the Black Sea coast - 1100 and 70 species per 100 km2.

The largest wetlands of international importance are located on the sea shores, in which tens of millions of waterfowl are concentrated for nesting, migration and wintering (Volga delta, Murmansk coast, etc.).

Coastal fauna and flora greatest development reaches the coast of the Barents Sea, where, with a tide height of 3-5 meters, the width of the littoral can be hundreds of meters. Here are a few vertical zones: dominance SEMIBALANUS BALANOIDES, LITORINA SAXSATILIS, macrophyte development (ASCOPHILLUM NODOSUM, FUCUS VESICULOSUS).

On soft soils, most of the littoral is occupied by communities FABRICIA SABELLA, ARENICOLA MARINA, and the sublittoral - communities LAMINARIA SP.SP.
In the high arctic seas (Kara, Laptev and others), littoral communities are weakly expressed due to severe ice conditions (in particular, due to the abrasive action of ice) and low tide heights (30-60 cm), the formation of the littoral here is due to significant surf (surge wave and storm).

In the coastal, shallow, mainly southern, part of these seas, which receives river runoff, along with marine forms, a significant and sometimes predominant role is played by brackish-water fauna, which is also mixed with freshwater euryhaline forms.
In the Far East, due to the diversity of the coastline and tide levels, rich fauna and flora of the littoral and sublittoral are represented.

The Sea of Okhotsk has the highest tidal fluctuations among the Russian seas, the population of the littoral is rich and diverse, and the littoral itself is extensive. The coastal region of the Sea of Okhotsk is richly populated with macroalgae, and it can be said that it is the center of the quantitative abundance of algae in Russian waters; stand out in this sense Kurile Islands(including the Pacific side) and the northwestern part of the sea.

It is for these areas that the expressions about underwater meadows and forests, which are usually used when describing thickets of kelp algae, are primarily applicable. Among the thickets of brown algae in the littoral and, especially, in the sublittoral, there is a fairly rich in terms of species zoobenthos. In the Sea of Japan in the sublittoral, the diversity of invertebrates and fish increases sharply due to the penetration of warm waters from the south.

Algae and sea grasses in the Sea of Japan have long been commercial targets, at times significant and irrational. The composition of macrophytobenthos can be significantly affected by anthropogenic disturbance of the environment, in particular pollution, for some species it can be negative and even fatal.
The Black and Azov seas are deprived of the littoral region - tidal fluctuations are absent here.

Under the influence of wave action, a pseudolittoral zone with poor biodiversity is formed here.
The Caspian Sea is characterized by long-term level fluctuations. In recent years, transgression has been noted, which leads to the formation of pioneer communities in flooded areas of the coastal strip.

Introduced species dominate here. NEREIS, ABRA, who moved in relatively recently.
The originality of the coasts of the Barents, Bering and Okhotsk Seas is given by huge colonies of sea birds - "bird markets".

In the Barents Sea, bazaars are located on small islands and on the Novaya Zemlya archipelago. The species most characteristic of the bazaars are guillemots (URIA AAGLE, U. LOMVIA), guillemots ( CEPPHUS GRYLLE, C. COLUMBA), little auks ( PLAUTUS ALLE), dead ends ( FRATERCULA ARCTICA) and kittiwake (RISSA TRYDACTYLA). In the north of the Far East, ipatka is added to them (FRATERCULA CORNICULATA), hatchet ( LUNDA CIRRHATA), auklets (AETHIA SP.SP.), old man (SYNTLIBORAMPHUS ANTIQUIS).

The coastal shallow waters of the Black, Azov, Caspian and Japanese Seas play an important role as nesting places, stops during migration and wintering for sea and waterfowl.
The seas and coasts of Russia are habitats for many rare and endangered species of plants and animals included in the Red Book of Russia: 17 species of invertebrates, 15 species of cyclostomes and fish, about 20 species of birds, 29 species and subspecies of mammals.

From unique marine ecosystems of the seas of Russia, the following should be noted:

— an ecosystem of shallow marine hydrothermal effusions in Kraternaya Bay (Yankicha Island, middle Kuril Islands);
— ‘island’ settlements of low boreal organisms in high boreal regions, in particular, the Busse Lagoon in southern Sakhalin;
— areas of large haulouts of marine mammals on the Commander Islands and near Tyuleniy Island (Sea of Okhotsk);
- areas of influence of subtropical marine fauna in the extreme south of Primorye, including the outer islands of Peter the Great Bay, Posyet Bay and the Gamow Peninsula.

Option 35
Part 1
Read the text and complete tasks 1-3
(1) All marine animals depend directly or indirectly on plant plankton as the basis of the food chain, and plant plankton can only exist where sufficient sunlight penetrates the water column for photosynthesis. (2) Below this layer, life rapidly declines, as deep-sea organisms are entirely dependent on the remains of plants and animals coming from above. (3)<...>it is enough to pollute only a small part of the upper layer, so that all life in the ocean perishes.
1. Indicate two sentences that correctly convey the MAIN information contained in the text. Write down the numbers of these sentences.
Pollution of only part of the deep layer of the ocean cannot lead to the death of all life in the ocean.
Since plant plankton is the basis of the food chain for marine animals and deep-sea organisms, it exists in the upper layer of water, it is enough to pollute only part of the upper layer for all life in the ocean to die.
The life of marine animals and deep-sea organisms depends in part on plant plankton, which is found in the upper layer of the water.
All life in the ocean can die if the top layer of water is contaminated, because it is in it that plant plankton lives, occupying important place in the food chain.
Since deep-sea organisms depend on animals living on the surface of the ocean, life is concentrated only in its upper layers.
2. Which of the following words (combinations of words) should be in place of the gap in the third (3) sentence of the text? Write down this word (combination of words).
Despite this,
Nonetheless
That's why
Primarily
For example,
3. Read the fragment of the dictionary entry, which gives the meaning of the word LIFE. Determine the meaning in which this word is used in the third (3) sentence of the text. Write down the number corresponding to this value in the given fragment of the dictionary entry.
LIFE, and, well.
The physiological existence of man, animal, all living things. Give Well. to someone (to give birth; high; also trans.). J. plants. Give to someone (pardon the convict; high.). Risk your life. Save someone. and. A matter of life and death.
The time of such existence from its inception to the end, as well as in some. his period. Short, long. At the beginning, at the end of life. My f. in the village.
The activity of society and man in one or another of its manifestations. Public well. Family well. Spiritual well. Seething well.
Real reality. Carry out a decision in Sign in (to come true).
Revitalization, manifestation of activity, energy. The streets are full of life. More life! (a call to act more energetically, livelier; colloquial).
4. In one of the words below, a mistake was made in setting the stress: the letter denoting the stressed vowel was highlighted INCORRECTLY. Write out this word.
obituary
arrived
called
skinned
having understood
5. In one of the sentences below, the underlined word is WRONGLY used. Correct the lexical error by choosing a paronym for the highlighted word. Write down the chosen word.
He was reprimanded for evasion from fulfilling his direct duties.
Automakers are resorting to various tricks to underestimate the data on harmful emissions into the atmosphere.
My neighbor has always been a thrifty host.
A vessel bound for ICE navigation must meet certain requirements.
The leader had to make a TOUGH decision.
6. In one of the words highlighted below, a mistake was made in the formation of the form of the word. Correct the mistake and write the word correctly.
LEG on back
famous PROFESSORS
IN BOKU
BEAUTIFUL
five paragraphs
Establish a correspondence between grammatical errors and sentences in which they are made: for each position of the first column, select the corresponding position from the second column.

GRAMMATICAL ERRORS

SUGGESTIONS

A) incorrect construction of a sentence with an indirect
speech

1) Thanks to the work of restorers, we can admire the frescoes of the Ferapontov Monastery.

B) an error in the construction of a sentence
with homogeneous members

2) The sisters were both well versed in music and in painting.

C) violation in the construction of the proposal
with inconsistent application

3) The officer told the stationmaster that "I need horses."

D) violation of the connection between the subject and the predicate

4) Many of those who have been to Mikhailovsky Park were amazed at the size of the old estate trees.

D) wrong
construction of a sentence with adverbial turnover

5) Depicting any object, for the artist his own attitude is important.

6) Thanks to the efforts of the builders, the object was commissioned on time.

7) Artistic media, which were used in A. S. Pushkin's poem "The Village", gravitate towards the classic tradition.

8) Everyone who begins to learn a foreign language early masters it perfectly.

9) Not only abilities, but also diligence will help to achieve success in work.

8. Determine the word in which the unstressed alternating vowel of the root is missing. Write out this word by inserting the missing letter.
floor .. turn
appearance
transfer
with .. renevy
freaked out
9. Determine the row in which the same letter is missing in both words. Write these words out with the missing letter.
under .. take, pr .. image
o..give, p..stab
pr..light, pr..growth
pr .. filed, pr .. fight
10. Write down the word in which the letter E is written at the place of the gap.
evasive
changeable
Overnight
yelp..wat
legible
11. Write down the word in which the letter I is written at the place of the gap.
abandoned
fill .. sew
feed..sh
noticed..ny
alarmed
12. Define a sentence in which NOT with the word is written CLEARLY. Open the brackets and write out this word.
The house stood in the middle of the steppe, not (NOT) FENCED.
Receive letters was (NOT) (FROM) WHOM.
Life was (NOT) QUIET, but stormy, eventful.
Brother (NOT) dignified Misha even with a look.
Alexey read in the eyes of a classmate (NOT) FAKE sadness.
13. Define a sentence in which both highlighted words are spelled ONE. Open the brackets and write out these two words.
(FROM) THE place where they said goodbye to Brook, they were now separated by at least five kilometers, (FOR) THAT there was no point in going back.
And the pale grebe THAT (SAME) is needed, (FOR) THIS is why nature created it.
HERE (SAME) it was necessary to ask people I did not know, WHAT (WOULD) call my mother.
The hostess could not understand, (WHY) WHY I was taking so long, (IN) FOR several minutes, looking at family photos on the wall.
There are people who (B) CONTINUATION of their whole lives bear SOME (THAT) imprint of being chosen.
14.. Indicate the number (s) in the place of which (s) is written HH.
The powerful (1) marble living room of the Kerilos villa is decorated with (2) and gilded (3) furniture, created (4) by the best masters of Italy on the model of ancient Greek.
15. Arrange punctuation marks. Write two sentences in which you need to put ONE comma. Write down the numbers of these sentences.
The goals of astrologers and alchemists were fantastic, but their observations and experiments contributed to the accumulation of knowledge both in astronomy and in chemistry.
In the 12th century, painters painted pictures with paints or ink on silk or paper scrolls.
On the street the whole of December, then snow, then rain ...
The caravel had three masts with straight and oblique sails and could move in the right direction even with a headwind.
Pushkin's things live a special life and museum keepers read the letters hidden in them.
16. Place all punctuation marks: indicate the number (s) in the place of which (s) in the sentence should (s) be a comma (s).
We crossed the river on an unsteady raft (1) made of three logs tied together (2) and went to the right (3) keeping (4) closer to the shore.
17. Place all punctuation marks: indicate the number (s) in the place of which (s) should (s) be a comma (s).
In the past, many were (1) of course (2) well-known Aksakov's house, where everything breathed creativity, family happiness and contentment. Friends of the family, numerous guests (3) probably (4) more than once had a chance to rest in this house in body and soul from worldly squabbles and worries.

·eighteen. Place all punctuation marks: indicate the number (s) in the place of which (s) in the sentence should (s) be a comma (s).
For abundant flowering (1) geraniums (2) seeds (3) of which (4) can be sown in summer or before winter are valued.
Place all punctuation marks: indicate all the numbers, in
At night, timber was brought to the river (1) and (2) when the white fog wrapped the banks (3) all eight companies laid boards (4) on the wreckage of bridges.
Read the text, complete tasks 20 - 25

(1) How a person is born, how he grows in his first years, how he himself becomes a man is unknown to him. (2) The beginning of life does not remain in his memory. (Z) The most important thing is missing. (4) The memory of childhood appears by the age of three or four, when the “I” begins. (5) 0 the first years can be recognized from the stories of parents, nannies: some scenes, words ... (b) For some reason, nature hides from a person the most tender, sweetest period of his life. (7) But for what? (8) This classification has some meaning, because everything that nature does is not accidental, by no means negligence, not maliciousness.
(9) But then oblivion and memory are constantly fighting, you won’t understand what exactly we forget, why we forget this person, good, smart, but we remember worthless. (10) Something memory manages to defend, something manages to be withdrawn. (11) The remnants, those that remain, this is the personality, it consists of memories, and above all childhood ones.
(12) Memories, if you like, need care. (13) It is useful to shake them up, refresh them, comprehend them, especially the early ones. (14) It is no coincidence that Leo Tolstoy began his work with a story about childhood. (15) At twenty-eight, he took up memories of what they usually end up with. (16) Maxim Gorky began to write "Childhood" at the age of forty-five. (17) And Mikhail Zoshchenko wrote “Before Sunrise” at the age of forty-nine and suffered for a long time, trying to restore his earliest memory to great memory.
And in this case he achieved rare results: it was a successful experience of this kind of memory restoration. (19) However, it seems that his work would be the easier the sooner he would deal with them.
Mnemosyne's Favorite Vladimir Nabokov the best way proved that childhood is the birthplace of the writer. (21) "Other Shores" are built from the treasures of children's memory, this is a celebration of children's memory. (22) By some miracle, he retained the freshness of her colors, smells, sensations.
“In front of my eyes, as well as in front of my mother’s, a huge coachman’s back, in a blue pleated padded jacket, with a leather-rimmed travel clock on a sash, was expanding, they showed twenty minutes past two.” (24) The end of the phrase must be confirmed by a photographic Nabokov memory device.
Once, while in the USA, at the University of Kansas, I got into a conversation with a former friend of V. Nabokov. (26) He told curious details about how Nabokov looked after his memory, one might say, cherished it. (27) For example, during the years of his life in the USA, and then in Switzerland, he did not acquire his own furniture, books. (28) Life in hotels, boarding houses allowed this. (29) He avoided acquiring things in every possible way: they, as he believed, take away memory. (SO) He tried to keep the world of his childhood intact in all micro-details...
Remembering my life, I understand that much of the past has died in me and continues to die. (32) Memory is what was saved.
(According to D. A. Granin)
Daniil Alexandrovich Granin (born in 1919) Russian Soviet writer, public figure.
20. Which of the statements correspond to the content of the text? Specify the answer numbers.
The human memory is arranged in such a way that it stores only memories of good people and destroys memories of bad ones.
A person learns about the first years of his life, as a rule, from close people.
Leo Tolstoy wrote a story about his childhood already in his old age.
The work of M. M. Zoshchenko “Before Sunrise” is a painful attempt to restore his earliest memory.
Living abroad, VV Nabokov tried to acquire as many new things as possible.
21. Which of the following statements are true? Specify the answer numbers.
Sentences 12, 13 present the narrative.
Proposition 21 is contrasted in content with Proposition 20.
Sentence 23 provides a description.
Sentences 27-30 illustrate what is being said in sentence 26.
In sentences 31, 32, reasoning is presented.
22. From sentences 20-24 write out an obsolete word with the meaning "belt".
23. Among sentences 25-32, find one (s) that is (s) connected with the previous one using an introductory word and a personal pronoun. Write the number(s) of this offer(s).
“How figurative the language of D. A. Granin can be judged by the use
a trope such as (A) ("restoration of memory" in sentence 18).
Syntactic means of expression: (B) ("shake up, refresh,
comprehend” in sentence 13, “colors, smells, sensations” in sentence 22),
(B) (“and especially for children” in sentence 11, “especially early”
in sentence 13) help the author express his thought more accurately.
Throughout the text, D. A. Granin uses the technique (G)
(“we forget” “remember” in sentence 9, “engaged” “finish” in sentence 15, “died” “saved” in sentences 31 and 32)”.
List of terms:
lexical repetition
colloquial vocabulary
metaphor
epithet
introductory constructions
clarifying constructions
rows of homogeneous sentence members
phraseological unit
antithesis
Part 2
Write an essay based on the text you read.
Formulate one of the problems posed by the author of the text. Comment on the formulated problem. Include in the comment two illustration examples from the read text that you think are important for understanding the problem in the source text (avoid over-quoting). Formulate the position of the author (narrator). Write whether you agree or disagree with the point of view of the author of the read text. Explain why. Argue your opinion, relying primarily on the reader's experience, as well as on knowledge and life observations (the first two arguments are taken into account). The volume of the essay is not less than 150 words.
A work written without relying on the text read (not on this text) is not evaluated. If the essay is a paraphrase or a complete rewrite of the source text without any comments, then such work is evaluated with 0 points.
Write an essay carefully, legible handwriting.

1. The problem of the role of human memory. (What is the role of memory in human life, what is the value of memory?)
1. The value of human memory is that it connects a person with his past. It is from memories, especially childhood ones, that the human personality consists.

2. The problem of the need to preserve and restore memories of the past. (Why is it important for a person to keep memories of the past?)
2. With the advent of everything new in a person's life, memories of his past are erased, and in order to maintain a connection with his past, it is important to keep memories.

3. The problem of fighting oblivion. (Why and how to fight the oblivion of the past?)
3. It is common for a person to forget everything that happened to him, so people try to fight oblivion: restoring memories of the past, creating works about their childhood, preserving old things.

Option 35
№
tasks
Answer

2
that's why

4
arrived

5
ice

6
paragraphs

8
rely

9
pick a preimage pick a preimage

10
overnight

11
feed

12
genuine

13
also therefore therefore also

17
1234 any other sequence of these digits

19
123 any other sequence of these digits

21
345 any other sequence of these digits

22
(on) sash sash

Seas and oceans are the cradle of life on Earth. According to some theories, all life on the planet originated in water. The sea resembles a huge metropolis, where everything lives according to its own laws, everyone takes his place and performs a very important function. If this order, which has developed into a harmonious mosaic, is violated, then this city will cease to exist. Therefore, it is important to know about the wealth of the animal world. You can find out who the marine inhabitants are, photos with the names of the most common species and interesting facts about their life.

All living creatures that inhabit the sea are conditionally divided into several categories:

animals (mammals);
fish;
algae and plankton;
deep sea fauna;
snakes and turtles.

There are some animals that are difficult to attribute to a particular group. For example, spongy or sponges.

marine mammals

Scientists have discovered more than 125 species of mammals - the inhabitants of the sea. They can be divided into three main groups:

Walruses, fur seals and seals (pinnipeds order).
Dolphins and whales (a detachment of cetaceans).
Manatees and dugongs (a detachment of herbivores).
Sea otters (or otters).

The first group is one of the largest (more than 600 million individuals). They are all carnivores and feed on fish. Walruses are very large animals. Some individuals reach 1.5 tons in weight and grow up to 4 m in length. The dexterity and flexibility of walruses are amazing with such sizes, they easily move on land and in water. Due to the special structure of the pharynx, for a long time spend in the sea and will not drown, even if they fall asleep. Thick brown skin becomes lighter with age, and if you manage to see a pink, even almost white, walrus, you know that he is about 35 years old. For these individuals, this is already old age. The walrus is not confused with the seal only because of their distinctive feature - tusks. Measurement of one of the largest tusks showed almost 80 cm in length, and weight - about 5 kg. The front fins of the walrus end with fingers - five on each paw.

Seals live in the Arctic and Antarctic, so they can withstand extremely low temperatures (down to -80˚C). Most of them do not have external auricles, but they hear very well. Seal fur is short but thick, which helps the animal move underwater. It seems that seals on land are clumsy and defenseless. They move with the help of the forelimbs and abdomen, their hind legs are poorly developed. However, they move briskly in the water and swim excellently.

Sea lions are very voracious. They eat 4-5 kg of fish per day. The leopard seal is a subspecies of seals that can catch and eat other small seals or penguins. Appearance typical of most pinnipeds. The fur seals are much smaller than their fellows in the detachment, so they crawl on land with the help of all four limbs. The eyes of these inhabitants of the sea are beautiful, but it is known that they see poorly - myopia.

Dolphins and whales are related to each other. Dolphins are one of the most unusual creatures on the planet. Their distinctive features:

The absence of ears, nose, small eyes and at the same time a unique echolocation that allows you to accurately determine the location of objects in the water.
Bare, streamlined body, without signs of wool or scales, the surface of which is constantly renewed.
Voice and the beginnings of speech, allowing dolphins to communicate with each other in a flock.

Whales are giants among mammals. They feed on plankton or small fish, breathe through a special hole called a “blowhole”. During exhalation, a fountain passes through it humid air from lungs. Whales move in the water with the help of fins, the size of which differs in different species. The blue whale is the largest animal that has ever lived on Earth.

The most popular types of sea fish

The second largest group of marine inhabitants includes the following species:

Cod (blue whiting, cod, saffron cod, hake, pollock, saithe and others).
Mackerel (mackerel, tuna, mackerel and other fish).
Flounders (flounder, halibut, dexist, embassicht, etc.).

Herring (Atlantic menhaden, Atlantic herring, Baltic herring, Pacific herring, European sardine, European sprat).

Garfish (garfish, medaka, saury, etc.).
Sea sharks.

The first species lives in the seas of the Atlantic Ocean, comfortable conditions for them are 0 ˚ C. Its main external difference is the mustache on the chin. They live mainly on the bottom, feed on plankton, but there are also predatory species. Cod is the most numerous representative of this subspecies. It breeds in large numbers - about 9 million eggs per spawning. Has a great commercial value because meat and liver are high in fat. Pollock is a long-liver in the cod family (lives 16 - 20 years). Lives in cold waters, is a semi-deep water fish. Pollock is caught everywhere.

Mackerels do not lead a bottom lifestyle. Their meat is valued for its high nutritional value, fat content and a large amount of vitamins.

In flounders, the eyes are located on one side of the head: right or left. They have symmetrical fins and a flattened body.

Herring fish is a pioneer among commercial fish. Distinctive features- no or very small teeth, and almost all lack scales.

Garfish-shaped elongated fish with long, sometimes asymmetrical jaws.

The shark is one of the largest marine predators. The whale shark is the only one that feeds on plankton. Unique abilities sharks - sense of smell and hearing. They can smell the smell for several hundred kilometers, and the inner ear is able to pick up ultrasounds. powerful weapon sharks - sharp teeth with which she tears the body of the victim into pieces. One of the main misconceptions is the opinion that all sharks are dangerous to humans. Only 4 species are dangerous to people - bull shark, white, tiger, long-winged.

Moray eels - marine predators from the family of eels, the body of which is covered with poisonous mucus. Outwardly, they are very similar to snakes. They practically do not see, they navigate in space by smell.

Algae and plankton

It is the most numerous form of life. There are two types of plankton:

Phytoplankton. It feeds on photosynthesis. Basically, it's algae.
Zooplankton (tiny animals and fish larvae). Eats phytoplankton.

Plankton includes algae, bacteria, protozoa, crustacean larvae, and jellyfish.

Jellyfish are one of the oldest creatures on Earth. Their exact species composition is unknown. One of the most major representatives- medusa " lion's mane"(tentacle length 30 m). Particularly dangerous Australian wasp". It is small in size and looks like transparent jellyfish - about 2.5 cm. When a jellyfish dies, its tentacles can sting for a few more days.

deep sea fauna

The inhabitants of the seabed are a great many, but their sizes are microscopic. These are mainly the simplest unicellular organisms, coelenterates, worms, crustaceans and molluscs. However, in deep water there are both fish and jellyfish, which have the ability to glow. Therefore, we can say that under the water column is not absolute darkness. The fish living there are predatory, they use light to attract prey. One of the most unusual and terrifying, at first glance, is howliod. This is a small black fish with a long mustache on the lower lip, with which it moves, and with terrible long teeth.

One of the most recognizable representatives of the order of mollusks is the squid. It lives in both warm and cold seas. How colder water, the paler the color of the squid. The change in color saturation also depends on the electrical impulse. Some individuals have three hearts, so they have the ability to regenerate. Squids are predators, they feed on small crustaceans and plankton.

Clams also include oysters, mussels, and scallops. These representatives have a soft body, closed in a shell of two valves. They practically do not move, burrow into silt or live in large colonies, located on rocks and underwater reefs.

snakes and turtles

Sea turtles are large animals. They reach 1.5 m in length and can weigh up to 300 kg. Ridley is the smallest among all turtles, weighing no more than 50 kg. The front paws of turtles are better developed than the hind ones. This helps them swim long distances. It is known that sea turtles appear on land only for procreation. The shell is a bony formation with thick shields. Its color is light brown to dark green.

To get their own food, turtles swim to a depth of 10 meters. Basically, they feed on mollusks, algae and sometimes small jellyfish.

Sea snakes exist in 56 species, united in 16 genera. They are found off the coast of Africa and Central America, in the Red Sea and off the coast of Japan. A large population lives in the South China Sea.

The snakes do not dive deeper than 200 meters, but without air they can stay for 2 hours. Therefore, these underwater inhabitants do not swim further than 5 - 6 km from land. Crustaceans, shrimps, eels became food for them. The most famous representatives of sea snakes:

The ringed emidocephalus is a snake with poisonous teeth.

Marine life, their photos with names, habitats and unusual facts lives are of great interest to both scientists and amateurs. The sea is a whole universe, the secrets of which people will have to learn for more than one millennium.