Question

which of the following does not cause soil erosion
a) Deforestation
b)flood
c)overgrazing
d) Afforestation​

Answer 1

D Afforestation

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Answer 2

Answer:

Soil erosion is not caused by d) Afforestation.

Explanation:

Soil erosion is a process where top fertile layer of the soil is lost or eroded. Fertility of soil is usually found in top layers and soil erosion decreases the fertility of soil.

• Deforestation is defined as cutting down trees in large scale in order to use land for commercial purposes. It causes soil erosion as tree roots hold the soil together but cutting down trees cause the soil to get uprooted by wind or other factors.
• Flood brings about destruction of land and property. Due to rain, the overflow or rise of water level in river and other water bodies causes flood.
• Overgrazing is repeatedly grazing of cattle on the same field. This causes grass and its root to be completely eaten by cattle and so the top layer is free to be eroded by wind or water.
• Afforestation is the process of planting new trees and plants in large scale. This helps in conservation of soil as roots of trees helps to hold the soil intact and hence prevent soil erosion.