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Q. Eutrophication is due to lack of oxygen and severe reductions in water quality, fish, and other animal populations which ultimately destroys the particular ecosystem. The main reason behind this is ____?
Answer: Increased chemical nutrients and compounds containing nitrogen or phosphorus
Notes: Eutrophication is when a body of water becomes overly enriched with minerals and nutrients which impetus to excessive growth of algae. It causes oxygen depletion of the water body. Due to this problem algal bloom occurs which is the increase of phytoplankton.

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