Question

What effect can fertilizers and sewage have on rivers and lakes?

Answer 1

Water Pollution

Explanation:

Fertilizers are the chemicals being prepared by the human beings to provide artificial fertility to the soil . But this backfires because :-

When fertilizers are spread on the fields , they are readily absorbed by the water particles in the soil .
Finally , these underground water gets deposited in the water bodies , leading to chemical increase in the water bodies , this harms the aquatic ecosystem as well as we human beings , when we drink this water .

Same is the case of the sewage , because sewage waste materials pollute the fresh water content . It makes water unfit for drinking .

All this activities as a whole are the causes of environmental imbalance in the nature as well as its catastrophic effects on other living organisms .