Question

What minerals are found in the runoff from agricultural land and untreated sewage effluents that are responsible for eutrophication of water bodies?

• A. Phosphorous and carbon
• B. Nitrogen and phosphorus
• C. Potassium and arsenic
• D. Iron and manganese

Answer 1

Answer: (B)

Nitrogen and phosphorus

• Nitrogen and phosphorus are found in excess amount in the runoff from agricultural land and untreated sewage that enters the water bodies.
• Eutrophication is the phenomenon in which excess nutrients such as inorganic nitrates and phosphates present in the water body resulting in the dense growth of algae. This is also called an algal bloom.

Thus the correct answer is option B.