How does algal bloom destroy the quality of a fresh water body ? Expla – InterviewSolution

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1.	How does algal bloom destroy the quality of a fresh water body ? Explain.
Answer» The excess growth of planktonic algae that causes colouration of water is called algal bloom. Nutrients present in sewage and fertilizers cause dense growth of plants and planktonic algae. Soon planktonic algae increase in number and impart a characteristic colouration to water. Algal bloom is toxic to animals and humans. It blocks light for submerged plants. There is a drastic decrease in oxygen due to which animals die.

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