Is the Earth in danger?

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dr....ht

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erup....on

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.... were caused by heavy rain.

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bli.....rd

If sea level continue to rise there will be...... of flooding.

Famine is a fall of large masses of snow and ice down a mountain.

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fre....ncy

The ...... had been dormant for years, but last month it showed signs of new life.

Water pollution is usually caused by human activities.

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treat

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hazard

The main sources of air pollution are the industries, agriculture and traffic.

One of the main environmental..... is nuclear power station.