Question : Which of the following is caused by the higher concentration of nitrogen and phosphorus ?
Option 1: Eutrophication
Option 2: Hardness
Option 3: Alkalinity
Option 4: Acidity
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Correct Answer: Eutrophication
Solution : The correct answer is Eutrophication.
Eutrophication is the process of nutrient enrichment of lakes. When the agricultural runoff rich in nitrogen and phosphorous reaches the water body, the nutrient levels in the water suddenly increase. Which leads to greater biological activity by the marine organisms and further increase in biological oxygen demand of the water. It slowly leads to the death of the water body.
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