Question

The excessive use of phosphates as water softeners leads to aquatic pollution. This process is called:

• A. denitrification
• B. phosphorylation
• C. deoxygenation
• D. eutrophication

Answer 1

The correct option is D eutrophication

Eutrophication is the ecosystem response to the addition of artificial or natural substances, mainly phosphates through detergents, fertilizers, or sewage, to an aquatic system. It supports the abnormal growth of algae and the lakes and ponds become marshy.

Hence, the correct option is $\text{D}$