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.

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Recycling provides a method of reducing the amount of waste materials that gets to the landfills – thus ______ it less probable for environmental pollution to take place.

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.