Question

List any three ways by which soil erosion occurs. State any two measures to reduce the loss of top soil.

Answer 1

CAUSES Soil erosion occurs when natural forces, such as wind and water, act on the soil. Man can also cause soil erosion by such practices as tilling a farmer's field or the clearing of vegetation. Clearing vegetation removes the protection of plants and roots needed to lock soil in place.

One of the best ways to prevent soil erosion is to increase vegetation. Plants and trees grow above the surface, protecting soil from erosion, Embankments and sloped land are most vulnerable to erosion due to gravity, afforestation,etc.

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Answer 2

Causes and preventive measures of soil erosion

Explanation:

Soil erosion is caused by the following three ways:

1. The natural cause which includes agents such as wind and water. During cyclones and flood, these agents due to the high force wash of the soil and cause soil erosion.
2. The human cause which includes mining, deforestation, digging the underground layer for water, etc. Such activities make the bond existing between the soil particles and lead to soil erosion.
3. Animal cause which includes overgrazing. As the livestock such as goat and cow feed continuously in particular regions, the soil is affected.

Two preventive measures to reduce the loss of topsoil:

Increased rate of afforestation:

• It is the first and foremost step to reduce the soil loss.
• Plants and trees hold the top layer of soil as they grow by penetrating their roots in the soil as well as with their trunks of leaves they protect the soil from heavy pours.

Construction of retention walls:

• Retention walls hold the soil particles during runoff and protects them from getting eroded.

Learn more about soil erosion

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