What helps prevent erosion?

• A. Wind
• B. Roots
• C. Rain
• D. Removal of plants

Answer: (B)

Plant roots stabilize soil and protect it from erosion. When soil is on a slope or exposed, movement by water or wind can carry particles away. Roots bind soil particles together, forming a strong network that holds the soil in place and resists being washed or blown away. They also improve soil structure and porosity, helping water infiltrate rather than run off, which reduces the erosive power of rainfall. A ground cover with roots and foliage also shields the soil from the impact of raindrops and slows wind at the surface. If plants are removed, the soil loses this binding and protection, making erosion much more likely.