Unit 6 Стор. 69 - 83: 6

6. 1. Chemicals called CFCs have been destroying the ozone layer. What are they?

a – Chlorofluorocarbons

2. How big is the hole in the ozone layer?

b – the same size as the USA

3. How long do CFCs stay in the atmosphere?

c – 100 years

4. What damages the ozone layer most?

a – burning the rainforests

5. Every year burning rainforests destroy areas the same size as

c – Austria

6. Which of these foods can help the world's ecology?

c – Brazil nuts

7. In 1945 an atomic bomb destroyed the Japanese city of Hiroshima and killed a lot of people.

c – equal to 2,000 Hiroshima bombs

8. Which of these is not ozone friendly?

c – the refrigerator