Question

what are the causes responsible for the decline in quality of water

Answer 1

increase in no. of industries
sewage flow in rivers
use of chemicals

Answer 2

The following are few reasons which leads to poor quality of water.

• People Bathing, washing clothes, cleansing animals nearby rivers, or even in it
• Release of toxic water from Industries to nearby rivers.
• Disposal Of trash.
• Pesticides, Insecticides etc.
• Fertilizers

• Acid Rain

Hope It helps you!