Question

Fertilisers added to fresh water will cause

• A. Death of plants
• B. Decrease in carbon dioxide content
• C. Increase in aquatic animals
• D. Eutrophication

Answer 1

The correct option is D Eutrophication

Eutrophication is a condition where the excessive richness in the environment leads to overgrowth of the plants in the water bodies. As the lakes fertility increases, algal bloom occurs. Algal bloom causes the degradation of water quality and fish mortality and dead remains begin to be deposited on the lake bottom. Over the year, lake finally converted into the land. Thus, the correct answer is option D.