Question

Which of the following promotes soil erosion?
A.Overgrazing
B.Terrace farming
C.Wind breaks
D.Conservation tillage

Answer 1

Hint: Basically, soil is the natural process in which the topsoil of a field is carried away by physical sources. Moreover, in this process, the soil particles are loosened or washed away in the valleys, rivers, streams and oceans.

Complete step by step answer:
Soil erosion is a continuous process that occurs either slowly or at an alarming rate. It further results in a continuous loss of topsoil, ecological degradation, soil collapse etc. Now, let’s discuss some of the causes of soil erosion.
1.Grazing- The grazing of animals feeds on the grasses removes the vegetation from the land. Their hooves further churn up the soil and they pull out the plants by their roots. This loosens the soil and makes it more prone to erosion.
2.Rainfall and flooding- Higher intensity of rainstorm is the main cause of soil erosion. Further, the raindrops disperse the soil which is then washed away into the nearby streams and rivers.
3.Construction- Most of the times the construction of roads and buildings exposes the soil to erosion. The forests and grasslands are cleared for construction purposes which further exposes the soil and makes it vulnerable to erosion.
4.Logging and mining- A large number of trees are cut down to carry out the logging process. Further, the canopy of the trees protects the soil from heavy rainfall. Moreover, the leaf litter that also protects the soil from erosion is also lost during logging.
So, from the given options overgrazing promotes soil erosion.

Hence, option A is correct.

Note: Soil erosion is a serious environmental issue and serious steps should be taken in order to prevent this erosion. Planting of trees should be done; proper drainage systems should be made to avoid soil erosion.