There are several physical factors contributing to soil degradation distinguished by the manners in which they change the natural composition and structure of the soil.

Rainfall, surface runoff, floods, wind erosion, tillage, and mass movements result in the loss of fertile top spoil thereby declining soil quality.

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_Kyanna(≧▽≦)

Explanation:

effects

plant roots and make a net or basket

shurbs and trees make a wind break

wind blows

it rains

cause

soil doesn't wash away

soil doesn't blow away

soil blows away

soil washes away