What’s the definition for mass movement

Mass movement, often called mass wasting, is the downslope movement of a mass of surface materials, such as soil, rock, or mud. The most basic reason is the angle of repose, or slope of the hillside. Other causes of mass movements include earthquakes, lack of vegetation, abundance of water, geology, and gravity.

Explanation:

1."lessen the worth of ."

2."increase the worth of."

3." beyond the worth of."

4."against the worth of ."

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