2 eroding of land by wind
3 plowing land without replanting
4 overusing land
The topsoil is the upper and outermost layer of the soil. It exhibit high amount of organic matter and the microorganisms remain active in the layer. It is composed of mineral particles, water, organic matter and air. It is fertile in nature and can support plant growth.
The erosion of land by wind: The soil erosion can occur due to agents like wind and water. These agents displace the top layer of soil and the components are deposited to other places.
Plowing land without replanting: Plowing is an agricultural practice in which the compact and tight soil is improved by turning up using a tool. It is done before sowing of seeds. Plowing can result in the soil erosion by wind as the loose soil can be easily blown up by wind.
Overusing land: The land can be overused in agricultural practice and mining. These practices can remove the topsoil layer.
