Question

From the statements given below, choose the human activities which cause water pollution .

• A. Wastes from factories are dumped into rivers.
• B. Releasing water from dams into rivers.
• C. Usage of fertilisers in farmlands.
• D. Sewage getting dumped into rivers.

Answer 1

Answer: (A), (B), (C), (D)

Sewage getting dumped into rivers.

Water pollution occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds.
Major causes of water pollution are:
1. Wastes from industries and sewage getting dumped into fresh water bodies.
2. Use of fertilisers and pesticides in farmlands.
3. Releasing water from dams into rivers which causes a variation of water temperature in rivers.