Question

Loss of upper fertile layer of soil is known as​

Answer 1

Soil erosion is the displacement of the upper layer of soil; it is a form of soil degradation. This natural process is caused by the dynamic activity of erosive agents, that is, water, ice (glaciers), snow, air (wind), plants, animals, and humans. In accordance with these agents, erosion is sometimes divided into water erosion, glacial erosion, snow erosion, wind (aeolean) erosion, zoogenic erosion and anthropogenic erosion. Soil erosion may be a slow process that continues relatively unnoticed, or it may occur at an alarming rate causing a serious loss of topsoil. The loss of soil from farmland may be reflected in reduced crop production potential, lower surface water quality and damaged drainage networks.Soil erosion could also cause sinkholes.

Answer 2

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$\Large\bf \green{soil \:erosion}$

The Loss of upper fertile layer of soil is known as soil erosion. Soil erosion is a naturally occurring process that refers to the wearing away of the top fertile layer of soil by the natural physical forces such as water and wind or through forces associated with farming activities such as tillage.