Question

Floods can be prevented by
A. Cutting the forests
B. Afforestation
C. Tilling the land
D. Removing the topsoil

Answer 1

Hint: The flood is the condition in which overflow of water occurs and it submerges the dry land. It is one of the natural calamities. Severe floods occur because of heavy rain and the rapid melting of snow and ice. The geological location of any particular area also matters for flood conditions to occur.

Complete answer: Deforestation is the cutting of trees in the forest for industrial and other purposes. Deforestation results in loss of vegetation, loss of diversity, desertification, soil erosion increases, and increases the greenhouse gases in the atmosphere. Deforestation can also cause flooding. Afforestation is the process of growing trees and seedlings to the barn land. Reforestation is a small form of the afforestation process. Trees prevent sediment runoff. More the forest more water will be absorbed by roots of forest trees. More the trees more rainwater will retain on leaves, and thus rainwater will directly evaporate back in the air. Leaves reduce the raindrop effect. More trees less will be soil erosion. Roots of forest trees absorb maximum soil water. This makes the soil dry and allows the soil to absorb more rainwater and thus flood condition is prevented.
So, considering the above information the correct answer to the given question is option B, i.e., Afforestation

Note: Besides flood prevention Afforestation has several other effects, they are as below prevent soil erosion, protect flora and fauna, prevent global warming, stabilize the environmental conditions, constant supply of forest products.