Soil erosion can be prevented by

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Overgrazing

Removal of vegetation

Afforestation (Plantation)

Increasing bird population

answer is C.

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Detailed Solution

:
Concept- The topsoil layer is removed by natural or artificial processes known as wearing away. The soil travels from one location and settles in another. It is a type of soil degradation that can happen on any terrain.
High levels of topsoil removal are exceedingly hazardous, may have negative repercussions, and pose a threat to the environment.
Causes of soil erosion:
1. Various kinds of agricultural practices expose the soil, which is instantly available for erosion.
2. Grazing and overgrazing can result in the exposure of soil because of its loosening.
3. Construction of varied buildings causes deforestation and clearing of lands. It exposes the soil for erosion.
4. Flowing of heavy winds takes away the highest layer of soil together with it.
5. Natural calamities like floods are a very important explanation for removal of the highest layer of soil.
Hence, the correct answer is option 3.

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