Question

how does erosion and mass wasting alter the surface of the earth? In what way do they pose a threat to mankind?​

Answer 1

Answer:

Erosion is distinct from weathering, in which chemical and physical processes simply break down larger pieces of rock into smaller ones. In erosion, the portions of Earth affected are moved from their original location by forces exerted by gravity, wind, flowing water or some combination.

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Answer 2

Based on geographical evidence, erosion and mass wasting can alter the surface of the earth in many ways, some of which include:

• Causing degradation of rocks and mountains.

• Affecting the shape and structure of valleys and ocean floors which may lead to hilly and steep areas.

• It can also affect the rate of rivers, streams, and groundwater flow, among others.

Both erosion and mass wasting can pose a threat to mankind in many ways, such as:

• Causing landslides, mudslides, etc.

• They affect water potability features.

• They strip forest covers.

• They affect water habitat and wildlife, a vital source of food and materials for mankind, etc.

Erosion can be caused as a result of water, wind, gravity, or ice. It removes and transports surface materials from one place to another, causing a change in slope and gradient of the land surface.

Mass wasting is the transportation of rocky materials downslope largely by the force of gravity.

Hence, in this case, it is concluded that erosion and mass wasting are natural occurrences that need to be prepared against.

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