Which of the following is not a possible cause of soil erosion?

Afforestation is not a possible cause of soil erosion. Afforestation is the process of establishing a forest, or stand of trees, in an area where there was no forest. It can actually help prevent soil erosion as the trees and their roots help to hold the soil in place, reducing the effects of wind and water erosion. On the other hand, deforestation, bush burning, and over-grazing are all known causes of soil erosion. Deforestation removes trees, which can lead to increased soil erosion from wind and water. Bush burning destroys vegetation cover and exposes the soil, making it more vulnerable to erosion. Over-grazing removes the vegetation cover and exposes the soil, making it more susceptible to erosion by wind and water.