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Is it true that if the dissolved oxygen level drops to zero, the water will become septic. Give an e

Is it true that if the dissolved oxygen level drops to zero, the water will become septic. Give an example which could lower the dissolved oxygen content of an aquatic body. 

1 Answer

Yes, the water becomes septic if the dissolved oxygen drops to zero. Organic pollution is an example which would reduce the dissolved oxygen of an aquatic body. 
answered Jul 12 by pady_1
 
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