Which of the following is not an agent of soil erosion ?

The correct answer is Geostrophic Winds.

The geostrophic winds blow high up in the atmosphere and do not affect soil erosion directly.

• The agents of soil erosion are the same as the agents of all types of erosion: water, wind, ice, or gravity.
• Runoff water due to rain and flowing of the river is the leading cause of soil erosion because water is abundant and has a lot of power.
• The wind is also a leading cause of soil erosion because wind can pick up soil and blow it far away.
• Gravity also causes soil erosion on the slopes.
• When heavy precipitation occurs the soil gets saturated with water and becomes mobile, under the action of gravity it comes down the slope in the form of sheet erosion or landslide.