Question

What causes eutrophication in water bodies?

• A. Excess amount of oil spilling into the water body.
• B. Excess amount of fertilisers getting drained into water.
• C. Change in the pH level of water.
• D. Decreased level of oxygen.

Answer 1

The correct option is B Excess amount of fertilisers getting drained into water.

The increased growth of algae in the water resulting in reduced sunlight penetration and depletion of dissolved oxygen in the water is called eutrophication. The growth of algae is induced by excess amount of fertilisers in water which is rich in minerals and nutrients.