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In order to protect the aquatic creatures, the dissolved oxygen content in fresh water stream should never be less than __________ PPm.

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Question: In order to protect the aquatic creatures, the dissolved oxygen content in fresh water stream should never be less than __________ PPm.
[A].

0.5

[B].

1

[C].

5

[D].

20

Answer: Option C

Explanation:

No answer description available for this question.