For the survival of fish in a river stream, the minimum dissolved oxygen is prescribed« Back to Previous Page

A. 3 PPm B. 4 PPm C. 5 PPm D. 10 ppm. Posted by Civil Engineer Asked on August 16, 2016 1:28 pm

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B. 4 PPm Posted by Civil Engineer Answered on August 16, 2016 1:28 pm