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Ammu read in the newspaper that, BOD of a water body in a nearby village was high and there is algal bloom.

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Ammu read in the newspaper that, BOD of a water body in a nearby village was high and there is algal bloom.

(a) What is BOD ? 

(b) What is algal bloom ? 

(c) Can you give possible reason for these phenomenon?

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(a) Biological oxygen demand 

(b) Inceased algal population 

(c) It is due to the accumulation of inorganic nutrients like phosphate and nitrate in water body

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