Question

In a farm there was a big pond with variety of fish. In a last couple of years it was found that the number of fish was reduced to one fourth. While checking it was observed that algae growth was increased and oxygen level got reduced. What could be the probable reason?

Answer 1

Answer:

The probable reason is most of the oxygen dissolved in water is used up by the algae.

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Answer 2

Answer:

fish reduced because algae sook the oxygen and the amount of algae increased because the water is not moving anywhere the water is stoped at one place only