Select the major contributors of air pollution:

Volcanoes

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Dust storms

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Combustion of fossil fuels

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Nuclear power plants

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Solution

The correct options are
C Combustion of fossil fuels
D Nuclear power plants
A volcanic explosion is incredibly loud and powerful. It releases a lot of ash and smoke in the air. Dust storms pollute the air too. These are natural sources of air pollution. Their frequency is not as common as man made contributors to air pollution such as factories discharging pollutants into the atmosphere and emissions from automobile.

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