Choose the best answer to complete each sentence.

Fossil fuels which are non-renewable pollute the air and cause air ______.

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If wastes are thrown ______, they can cause pollution in water, land and air.

Find out the synonym of the underlined word from the options below.

The area is roped off because the water is seriously polluted.

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We need to cut down on our fuel ____ by having fewer cars on the road.

Choose the best answer to complete each sentence. What this country needs is a ____ policy for investment in science and technology.

Choose the best answer to complete each sentence. The Forestry Commission is responsible for____ over 2 million acres of woodland.