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 their surroundings. 2. people the soil with too many 3. people rubbish and litter on the land. 4. cars fill the air with the 5. environmental pollution disastrous processes. 6. the pollution problem is 7. factories much of the material that pollutes air and water. 8. pollution can be 9. to large amounts of radiation can cause cancer. 10. international agreements most testing of nuclear weapons.

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