Soil erosion can be prevented by

Options

A. terrace farming
B. intensive cropping
C. deforestation
D. both (a) and (b).

Answer

D

Explanation

Soil erosion can be prevented by intensive cropping and terrace farming. These are discussed below.
(i) Intensive cropping means growing of more crops in the same fields and not leaving them unused. If the fields remain covered with crops throughout the year, topsoil will not be exposed to winds or rains. Thus, no soil erosion will occur. (ii) In hilly regions, small fields are formed in the form of steps or terraces for cultivation of crops. Such a farming in hilly regions is called terrace farming. This technique reduces the flow of rain water down the slopes of hills. Moreover, eroded soil from upper regions of hills gets deposited in lower terraces. In this way, soil erosion can be prevented in hilly regions.