Eutrophication includes all,except

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(D) Eutrophication is the process of nutrient enrichment in water bodies,which leads to the excessive growth of algae (like $BGA$ or Blue-Green Algae)

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Finally decreased $COD$

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(D) Eutrophication is the process of nutrient enrichment in water bodies,which leads to the excessive growth of algae (like $BGA$ or Blue-Green Algae). This excessive growth leads to the depletion of dissolved oxygen $(DO)$ as aerobic bacteria decompose the organic matter. Consequently,the death of submerged organisms occurs due to the lack of oxygen. Finally,the $COD$ (Chemical Oxygen Demand) increases because more oxygen is required to oxidize the increased amount of organic matter present in the water.

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