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Soil erosion is the loss of soil (along with rock and other particles), usually due to water and wind, though sometimes by ice, by gravity (especially on steep slopes), or even by living organisms such as burrowing animals, which is known as bioerosion.W
Erosion is a natural process, and contributes to the nutrient cycles of rivers and ocean fisheries. However, where soil loses its natural protection, through deforestation, forest fire, or excessive and inappropriate tilling, the soil is highly vulnerable to erosion, especially in heavy rain or extremely strong winds.
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