XERCISE 14. Fill in gaps with the missing words in the following sentences; the first letter of each word has been given to help you:

1. People often p... their surroundings. 2. People d... the soil with too many f... 3. People s... rubbish and litter on the land. 4. Cars fill the air with the n... 5. Environmental pollution c... disastrous processes. 6. The pollution problem is c... 7. Factories d... much of the material that pol­lutes air and water. 8. Pollution can be r... 9. E... to large amounts of ra­diation can cause cancer. 10. International agreements b... most testing of nuclear weapons.