In eutrophication,dissolved O_2 ....... and B | vedclass

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(B) Eutrophication is the process where water bodies become enriched with nutrients,leading to excessive growth of algae and aquatic plants.As these o

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Decreases,increases

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(B) Eutrophication is the process where water bodies become enriched with nutrients,leading to excessive growth of algae and aquatic plants.As these organisms die,decomposers like bacteria break them down,consuming large amounts of dissolved oxygen $(O_2)$ in the process.Consequently,the level of dissolved $O_2$ in the water decreases.$BOD$ (Biochemical Oxygen Demand) is the amount of oxygen required by aerobic microorganisms to decompose the organic matter present in a water sample.Since the organic matter increases due to the death of excessive aquatic life,the $BOD$ of the water increases significantly.Therefore,in eutrophication,dissolved $O_2$ decreases and $BOD$ increases.

In eutrophication,dissolved $O_2$ ....... and $BOD$ ......

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