Question

What is eutrophication?

• A. Decrease in levels of oxygen in water bodies
• B. Increase in levels of oxygen in water bodies
• C. Reduction of nutrients in water bodies
• D. Increase in sunlight penetration

Answer 1

The correct option is A Decrease in levels of oxygen in water bodies

The increased growth of algae in the water resulting in reduced sunlight penetration and depletion of dissolved oxygen in the water is called eutrophication. This is caused by presence of inorganic compounds in water rich in minerals and supports the growth of algae in river water.