Which of the following conditions shows ...

Which of the following conditions shows the polluted enviorment ?

pH of rain water is 5.6

amount of carbodioxide in the atmosphere is 0.03%

biochemcal oxygen demad 10 ppm

Eutrophication

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Which of the following conditions show the polluted environment.

pH of rain water is 5.6

amount of carbon dioxide in the atmosphere is 0.03%

biochemical oxygen demand is 10 ppm

eutrophication

Eutrophication

BOD is 4 ppm

pH of rain water is 5.6

Amount of `CO_(2)` in the atmosphere is 0.03%

Profundal zone has both heterotrophs and phytoplanktons.

Profundal zone harbors only heterotrophs.

Planktons are only found in littoral zone.

Heterotrophs are maximum in limnetic zone.