Excessive accumulation of organic matter in water bodies leads to – InterviewSolution

1.	Excessive accumulation of organic matter in water bodies leads to
Answer» Decrease in species diversity Increase in species diversity Green house effect No effect on species diversity Solution :Organic matter (organic wastes) contains a NUMBER of pathogen, SECONDARY pollutant, pesticides etc. Biological oxygen DEMAND becomes high, and therefore the dissolved oxygen reduced. Hence, planktons Mollusca and fishes will be eliminated due to reduced dissolved oxygen and presence of secondary pollutants. Some species like annelid worm Tubifex and some insect larvae (Chironomus) tolerate POLLUTION

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