Question

4. How does river water get polluted? Explain.
A.​

Answer 1

Answer:

River water are polluted by :

Explanation:

1.Large amounts of fertilizers or farm waste drain into river

2.By doing chemical treatment

3.Algae use these substances to grow and multiply rapidly turning the water polluted

Answer 2

Explanation:

Dirty water containing chemical is put back in the river. Water used for cooling is warmer than the river itself, and this is also a form of pollution.

These wastes contain harmful chemicals and toxins which make the water poisonous for aquatic animals and plants too.

Hope this will be helpful to you.