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Which of the following is the main source of eutrophication?

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in Environmental Biotechnology by (64.7k points)
Which of the following is the main source of eutrophication?

(a) Effluent quality

(b) Nitrogen

(c) Salty water

(d) Pure water

I have been asked this question at a job interview.

This interesting question is from Microbial Biofilm and Wastewater Treatment in section Biological Treatment of Waste Water of Environmental Biotechnology

1 Answer

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Correct choice is (b) Nitrogen

Explanation: Nitrogen contamination is the main source of eutrophication of surface water, during microbiological examination, the relative concentration of organism at the time of stress is useful in determining the changes in effluent quality of water, salty water is found abundantly in seas, pure water doesn’t contain any impurities, however these does not cause eutrophication.

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