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Nitrogen and __________ are the main source for eutrophication of surface water?

(a) Phosphorus

(b) Potassium

(c) Calcium

(d) Magnesium

The question was asked during an internship interview.

Asked question is from Nitrogen Removal During Wastewater Treatment in section Bacterial Metabolism in Wastewater Treatment Systems of Environmental Biotechnology

1 Answer

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Best answer
Correct choice is (a) Phosphorus

Best explanation: Nitrogen and phosphorus is majorly responsible for Eutrophication which leads to hypoxic conditions in water leading to algal blooms, whereas, Calcium, potassium and magnesium are the basic nutrients and minerals available in the environment not leading to eutrophication.

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