Answer :
The carrying away of topmost fertile layer of soil that contains humus is called soil erosion.We can prevent soil erosion by planting more and more trees and making people ware of new methods of planting.We can tell people not to cut trees.
In our modern life soil erosion became a very common issue. Soil is a natural resource and we need to conserve soil.Once loss it is very hard to regain it back. Soil can be preserved by planting more plants and trees in the bare land. Create awareness among people about the consequences of the soil erosion, We can prevent soil erosion by applying mulch on the top layer of the soil. Ensure the drainage system of the houses and other building and make sure that the drainage will not harm the soil