Answers

2015-12-10T11:07:38+05:30
Eutrophication is a change in an aquatic system when excess of nutrition (artificial or natural) is accumulated causing algal blooms on the surface of water bodies and which increases BOD ( biological oxygen demand ) causing death to those underwater organisms.
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2015-12-12T11:44:44+05:30
The excessive richness of nutrients in water that causes dense growth of algae on the surface and causes death of other organisms living in the water is called eutrophication.
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so nice, simple and perfect answer. thanks.
thank you