Complete the sentence with the correct form of the verb in the box. exhaust release alternate research relate supply renew pollute harm finite 1. Coal, gas and oil are ______ forms of energy that can not be replaced after used. 2. The nuclear plant provides a fifth of the nation's energy ______. 3. Solar energy is not only plentiful and ______ but also clean and safe. 4. Increased consumption will lead to faster ______ of our natural resources. 5. Electricity companies were criticized for failing to develop ______ energy sources. 6. Oxygen from the water is ______ into the atmosphere. 7. Fossil fuels will be exhausted within a _relatively_ short time. 8. How to make full use of these sources of energy is a question for ______ all over the world. 9. These pesticides are environmentally ______. 10. Water power provides energy without ______.

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1. non-renewable

2. supplies

3. infinite

4. exhausion

5. alternative

6. released

7. relatively

8. researchers 

9. harmful

10. pollution

1. Coal, gas and oil are 1. non-renewable forms of

2. The nuclear plant provides a fifth of the nation's energy supplies

3. Solar energy is not only plentiful and ___infinite___ but also clean and safe.

4. Increased consumption will lead to faster ___exhaustion___ of our natural resources.

5. Electricity companies were criticized for failing to develop __alternative____ energy sources.

6. Oxygen from the water is __released___ into the atmosphere.

7. Fossil fuels will be exhausted within a relatively_ short time.

8. How to make full use of these sources of energy is a question for __researchers____ all over the world.

9. These pesticides are environmentally __harmful.____.

10. Water power provides energy without ___pollution

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