Question

What is the phenomenon called when nutrient-rich water bodies lead to excessive plant growth, oxygen depletion, and loss of biodiversity?

• A. Biodegradation
• B. Eutrophication
• C. Acidification
• D. Salinization

Answer 1

Answer:

B. Eutrophication

• The BOD value of clean water is below 5 ppm.

• The BOD value of polluted water is more than 17 ppm.

• Nutrient-rich water bodies lead to excessive plant growth, resulting in oxygen depletion, which kills aquatic life and leads to a loss of biodiversity. This phenomenon is known as Eutrophication.