Match the words with their meanings.

1. species	c. a plant or animal group
2. extinct	f. no longer existing
3. terrifying	a. very, very frightening
4. irreversible	g. impossible to change or bring back
5. assessment	h. a judgement or opinion
6. underestimate (noun	b. a wrong idea that something is smaller or less important than it really is
7. conservation	d. the management of land and water to prevent it from being damaged or destroyed
8. to migrate	e. to move to another part of the world

2-

1. Over the next 50 years about25% of land animals will become extinct.

2. More than 1 million species will be lost by 2050.

3. This loss represents more than 10% of all plants and animals.

4. The research took two years to complete.

5. More than one third 300 South African plant species studied were expected to die out.

6. The Cerrado region of Brazil covers one fifth of the country.

7. 1.870 species of tree were studied in Mexico.

8. The greenhouse effect takes 25 years to have its full effect