Question:

What are external forces? Define weathering and erosion.?

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  1. Weathering is the gradual breaking down of rock exposed at the earth's surface.Joints and fissures in rock let in air and water and facilitate the process.

    Erosion is the process of removing sediment and transporting it from one place to another. The main agents are water,wind,glaciers and gravity.


  2. The air force.

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