Q2 ans please
Dear Student,
The addition of harmful substances to soil whereby both soil fertility and the useful life forms present in soil are adversely affected is called soil pollution.
Causes of soil pollution
- Industrial wastes such as harmful chemicals
- Agricultural wastes containing pesticides, fertilizers and insecticides
- Acid rain
- Inadequate knowledge of soil management
- Garbage disposal
- Undesirable irrigation practices
Effects:
Most fertilizers and pesticides are made of chemicals. Excessive use of these can kill the microorganisms that naturally occur in soil and recycle its nutrients. The harmful chemicals also affect earthworms, which help convert organic matter into humus. Uncontrolled use of fertilizers and pesticides may cause soil to lose its fertility and make it incapable of sustaining life.
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