Question

define the term eutropication

Answer 1

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.

Answer 2

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.