Question : There is a sharp decline in dissolved oxygen downstream fro – InterviewSolution

1.	Question : There is a sharp decline in dissolved oxygen downstream from the point of sewage discharge. Why? What are its adverse effects ?
Answer» Solution :FOLLOWING discharge of sewage into river, microorganisms involved in biodegradation of organic matter PRESENT in sewage consume more oxygen. This CAUSE mortality of fish and other AQUATIC creatures.

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