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What are causes of air pollution ?...

What are causes of air pollution ?

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The various causes of air pollution are :
(i) Smoke stacks of thermal power plants, forest fires, volcanic eruptions etc.
(ii) Garbage decomposition releases unwanted gases in the air.
(iii) Excessive use of fossil fuels by automobiles and particulate air pollutants released by industries.
(iv) Use of leaded petrol.
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