1. drought-

2. greenhouse effect-

3. oil spill-

4. flood-

5. melt-

6. ozone layer-

7. global warming-

8. nuclear disaster-

9. pollution-
A. when heat cannot escape from the atmosphere and the temperature on Earth goes up

B. when ice turns to water

C. a long period of time when there is no rain

D. the part of the Earth's atmosphere which protects the earth from the sun

E. the process of making the air, water or land worse, with chemicals, for example

F. a large quantity of water that suddenly covers an area

G. the increase in the temperature on Earth

H. an accident with nuclear power, usually causing radioactivity

I. an accident when oil comes out of its container, for example at sea