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Accelerated eutrophication occurs due toA. increase in amount of dissolved oxygenB. disposal of waste rich in nitrates and phosphatesC. increase in concentration of DDT and mercury in waterD. unsafe disposal of radioactive wastes. |
Answer» Correct Answer - B Cultural or accelerated eutrophication is nutrient enrichment of water bodies due to human activities like passage of sewage, industrial effluents and runoff from fertilised fields rich in nitrates and phosphates. Nutrients present in sewage, agriculture wastes and fertilisers cause dense growth of plants and planktonic algae. |
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