I. Mark the stress in the following.

A. since        B. Although     C. unless                 D. Due to

8. Grace didn’t love nature, ________ she wasn’t happy when her group went camping in a jungle.

A. but           B. and             C. because              D. so

9. Thousands of fish were killed ________ a discharge of poisonous Chemicals from a nearby factory.

A. because    B. lead to        C. result in               D. as a result of

10. ________the fog, there were no take-oils from the airport yesterday.

A. Since        B. Because         C. Owing to            D. Thanks to

III. Complete the sentences with the verbs in brackets. Use conditional sentences type 1.

1. If the air in a City____gets____ (get) very polluted, it can make people’s eyes burn.

2. If we dump all sorts of Chemicals into rivers, we____won't be____ (not be) able to swim in them in the future.

3. Many wildlife habitats will be destroyed if people____keep____ (keep) polluting the environment.

4. If we all use public transport more, we____will help____ (help) reduce air pollution

IV. Use the correct form of the word given to complete each sentence.

1. It’s evidence that this ocean is clean and environmentally____polluted____. (pollute)

2. Diseases are primarily due to____contaminated____ food and air. (contaminate)

3. While some Chemicals may be harmless others can cause____damage____. (damage)

4. Life expectancy has gone down due to___deadly____ diseases caused by air pollution. (die)

I. Mark the stress in the following.

8. D. so

9. D. as a result of

10. C. Owing to

III. Complete the sentences with the verbs in brackets. Use conditional sentences type 1

1. gets

2. won't able

3. keep

4. will help

V. Use the correct form of the word given to complete each sentence.

1. polluted

2. contaminated 

3. damage

4. deadly