Answers

2014-03-14T11:48:15+05:30
Increase irrigation in fields with extensive use of fertilizers.mosquito breeding etc
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2014-03-14T20:55:02+05:30
1.Addition of desirable substances like industrial waste in water.
2.Removal of desirable substances like dissolved oxygen from water.
3.Variation in temperature of water bodies which disturbs the marine living organisms.

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