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Air pollution is caused by

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Air pollution is caused by

(a) Organic and inorganic industrial effluents discharged into rivers.

(b) Presence of high proportion of sulphur dioxide, carbon monoxide and air-borne particulate materials.

(c) Unwanted sounds from industries, generators, saws and pneumatic and electric drills.

(d) Overdrawing of groundwater.

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(b) Presence of high proportion of sulphur dioxide, carbon monoxide and air-borne particulate materials.

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