A lake with an inflow of domestic sewage rich | vedclass

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(C) When domestic sewage rich in organic waste enters a lake,it leads to eutrophication. Microorganisms like bacteria decompose this organic matter,wh

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Death of fish due to lack of oxygen

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(C) When domestic sewage rich in organic waste enters a lake,it leads to eutrophication. Microorganisms like bacteria decompose this organic matter,which requires a large amount of dissolved oxygen. This process significantly reduces the Biological Oxygen Demand $(BOD)$ and depletes the dissolved oxygen levels in the water. As a result,aquatic organisms,especially fish,die due to the lack of oxygen (asphyxiation).

$A$ lake with an inflow of domestic sewage rich in organic waste may result in:

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