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12.Make a report about any ecosystem you find interesting and unusual. Write a plan first and do not forget to mention ecosystem`s

location

inhabitants

condition

human impact

future prospects

13.Choose any of the following ideas (or propose your own), find information and write an essay (150-250 words).

Artificial ecosystem: Myth or reality?

One of food chains.

Ecosystem we live in.

Climate changes and Biosphere.

Unit 13

Тема урока: Extinction of Species

текст 1 Extinction

текст 2 Grizzly Bear

текст 3 Dinosaurs

текст 4 Гигантский олень

текст 5 Динозавры

Words

invade

v. to go into a place in large numbers, especially when you are not wanted

sight

n. the physical ability to see, vision

consider

v. to think carefully about something, typically before making a decision

willing

adj. someone who is eager to help etc and does not have to be persuaded

sacrifice

n. the act of offering something to a god, especially in the past, by killing an animal or person in a religious ceremony

inclination

n. a tendency to think or behave in a particular way

deserve

v. to have earned something by good or bad actions or behaviour

deliberate

adj. fully considered, not impulsive

worthwhile

adj. if something is worthwhile, it is important or useful, or you gain something from it

brink

n. the verge of a particular situation or action, typically one that is unwelcome

sheer

adj. nothing other than, pure

insatiable

adj. (of an appetite or desire) impossible to satisfy

deprive

v. to prevent someone from having something, especially something that they need or should have

appreciate

v. to understand how good or useful someone or something is

reduction

n. the action or fact of making something smaller or less in amount, degree, or size

precipitation

n. rain, snow, sleet, or hail that falls to or condenses on the ground

alter

v. to change, or to make someone or something change

trap

v. to catch someone or something by forcing them into a place from which they cannot escape

illegal

adj. not allowed by the law

exterminate

v. to destroy completely

submerge

v. to cover something completely with water or another liquid

Working with words

1.Match a and b to make word combinations.

A

B

genetic

space

outer

resources

deliberate

variety

numerous

weapon

natural

situation

powerful

intent

current

opportunities

2.Word building.

noun

verb

adjective

attributable

resourcefulness

inclination

to ignore

expansion

to pollute

relatively

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