Question

Eutrophication causes;

• A. increase in nutrients
• B. increase in dissolved salts
• C. reduction in dissolved oxygen
• D. reduction in water pollution

Answer 1

Answer: (C)

reduction in dissolved oxygen

Eutrophication is the abundance of nutrients in water, which causes dense growth of the plants life. Eutrophication becomes a major problem. The nitrates and phosphates present in the fertilizers get mixed with the river and lake, which reduces the oxygen level from the water, leading to death of marine life. Thus it leads to depletion of oxygen level.