4. What is soil erosion? How can it be prevented?
5 Why do we need to conserve soil?
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soil erosion means eradication of top soil due to the action of nature
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4.The displacement of upper layer of soil is called soil erosion. The four most common soil erosion prevention methods are vegetation, geotextiles, mulch, and retaining walls. ... Vegetation: The simplest and most natural way to prevent erosion is through planting vegetation.
Explanation:
5.Erosion is problematic because loss of topsoil equates to loss of nutrients that are required for plants to survive. ... The aim of soil conservation is to utilize various techniques to preserve the fertility of soil and prevent harmful erosion.
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