Question

The process of 'eutrophication' is due to

• A. increase in concentration of insecticide in water.
• B. increase in concentration of fluoride ion in water
• C. the reduction in concentration of the dissolved oxygen in water due to phosphate pollution in water.
• D. attack of younger leaves of a plant by peroxyacetyl nitrate.
• E. increase in concentration of radioactive substances in water.

Answer 1

Answer: (C)

The enrichment of water by plant nutrients is known as eutrophication. It is due to the reduction in concentration of dissolved oxygen in water due to phosphate pollution.