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(i) Agricultural activities,
(ii) Indoor air pollution ,
(iii) Mining operations ,
(iv) Exhaust from industries ,
(v) Burning of fossil fuels are the causes of air pollution .
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Air pollution is caused mainly by transportation,fuel combustion in stationary sources,burning of fossil fuels like coal,wood,dry grass,and construction activity.Air pollution in 2012 caused the deaths of around 7 million people worldwide.
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