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| Q. |
Soil erosion can be prevented by – |
| A. | Increasing bird population |
| B. | Afforestation |
| C. | Removal of vegetation |
| D. | Overgrazing |
| Answer» B. Afforestation | |
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Explanation: Soil erosion takes place when the soil is blown away by the wind or washed awayby the rain. Afforestation or planting trees can check soil erosion as roots of trees/plants hold the soil. Thus, when more trees are planted their roots don't allow the soil to be blown or washed away and prevent soil erosion. |
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