Which of the following conditions show the polluted environment.

1.	Which of the following conditions show the polluted environment.
Answer» PH of rain WATER is 5.6 amount of carbon dioxide in the atmosphere is 0.03% biochemical oxygen DEMAND is 10 ppm eutrophication Solution :Biochemical oxygen demand greater than 5 ppm shows water is polluted. Eutrophication, i.e. FLOW of phosphatic fertilizers waste into lakes, resulting into the death of fish is pollution of water

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