Answers

2014-09-19T21:04:38+05:30
Factories, Vehicles, CFCs from Refrigirators, Excreta of some animals which cause deadly diseases to man kind.
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2014-09-19T21:08:10+05:30
Organic pollutants, metals like Mn, Ni, Fe etc, chemicals, inorganic wastes, plastic, undegradable waste materials.
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