Question 139322 • WCA 4130 Earth and Space Science 1st Quarter 26-27
Mass movement happens when gravity pulls soil or rock downhill, especially when a slope becomes less stable. Steep slopes, removal of vegetation, earthquakes, and undercutting can all increase instability or trigger movement. Deposition is the buildup of material, not usually a cause of mass movement; animal activity is not considered a major general trigger here.
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