Which of the following does NOT contribute to soil erosion?

Plant roots play a crucial role in preventing soil erosion. They help to anchor the soil in place, reducing the likelihood of soil particles being washed or blown away. The structural integrity that roots provide is essential for maintaining soil stability, especially on slopes or in areas with heavy rainfall. By binding the soil together, plant roots create a protective barrier that significantly mitigates erosion caused by both water and wind.

In contrast, while water runoff, wind, and human activities can all contribute to soil erosion by displacing soil particles, plant roots actively work against erosion. Thus, they serve a protective, stabilizing function within the ecosystem, highlighting their importance in soil conservation practices.