49. Which of the following may be the impact/impacts of water pollution?

1. Eutrophication

2. Bio Magnification

3. Increase in BOD (Biochemical Oxygen Demand)

1. 1 and 3 only

2. 2 only

3. 2 and 3 only

4. 1, 2 and 3

Correct Answer :

1, 2 and 3