Question

Soil erosion by wind brings about the serious damage in soil by changing the-------
A) Soil permeability
B) Soil structure
C) Soil texture
D) Soil plasticity

Answer 1

Hint:Soil erosion is the natural process of removing topsoil but the process is accelerated by human activities.These activities are farming,grazing, mining , construction and recreational etc are causes of soil erosion. Soil erosion not just degrades the land but it also increases pollution and sedimentation in rivers. Due to degradation of lands the land losses its water holding capacity which causes floods

Complete answer:
Top soil or surface texture provide protection from the wind erosion.The wind carries the very fine particles of the soil at higher places and is transported a great distance.medium sized soil particles are lifted a short distance into the air and through it back to the surface of the soil.

A variety of soil movement is due to wind erosion. These movements are divided into three types that are suspension ,creep and saltation. When wind takes fine particles of the soil over a long distance then it is called suspension. In the process of creep soil particles roll over an area and saltation is the primary movement of the soil when soil particles move across a surface damaging soil surface and vegetation. Any kind of soil movement through wind causes land erosion.

Hence the correct answer is option ‘A’.

Note:erosion of soil by wind can be controlled by following ways:
>Spray the organic matter on the top of the soil or increase the irrigation of the soil which will help the soil to remain moist and stick together
>Erosion through wind can be reduced by creating ridges of appropriate size which increase the roughness of the soil.
>Windbreak can be created by arranging the plantings of trees around an area to reduce wind erosion.