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Which of the following statements is correct?

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Large population of bacteria in water decomposes organic matter and decreases the DO

The DO below 6 ppm inhibits the growth of fish

Aquatic green plants decrease DO at night time

All of the above are correct

answer is D.

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Detailed Solution

Large population of bacteria in water decomposes organic matter and decreases the DO, the DO below 6ppm inhibits the growth of fish and aquatic green plants decreases DO at night time.

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