SCIENCE
EARTH SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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cut channels into the hillside for the water to flow
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cover the hillside with gravel
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plant trees and bushes on the hillside
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make barriers of rocks at different points on the hillside
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Detailed explanation-1: -The most effective, natural way to control soil erosion on steep slopes and embankments is to plant vegetation. Not only will the grass, fescue and leaves help to slow down raindrops as they fall, the roots of the plants will also help to hold the soil together, making it harder for water to wash it away.
Detailed explanation-2: -Afforestation, step farming, and planting trees can prevent soil erosion.
Detailed explanation-3: -Afforestation is the best way to prevent soil erosion as planting the trees holds in soil that prevents the washing of the fertility of the soil. Afforestation helps in the retention of water and thus conserves soil.
Detailed explanation-4: -use land according to its capability. protect the soil surface with some form of cover. control runoff before it develops into an erosive force. 18-Dec-2013