Chapter 4: Soil

Q&A -Ask Doubts and Get Answers



Explain how soil pollution and soil erosion could be prevented.


The degradation of soil caused by the presence of toxic and harmful substances is called soil or land pollution.

Soil pollution can be prevented by the following ways:

1. We should use biodegradable products and should always recycle non-biodegradable products.

2. We should limit the use of pesticides and insecticides that are harmful to the soil.

3. We should make dumping grounds for non-biodegradable wastes that is far away from the fertile land.

The removal of the fertile top layer of soil by wind or water is called soil erosion. Soil erosion occurs easily in those areas which are not covered by vegetation (trees and plants). In absence of trees and plants, the soil becomes loose and it can be easily blown away by the wind or washed away by the flowing rainwater.

Soil erosion can be prevented by the flowing ways:

1. Cutting down forests tress on large scale is called deforestation. Deforestation causes soil erosion. So, soil erosion can be prevented by preventing deforestation.

2. Soil erosion can be prevented by afforestation. Afforestation is the process of growing forest trees on large scale.

3. Soil erosion can be prevented by increasing the plantation (growing plants and trees) around us. 

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