GEOLOGY

Detailed explanation-1: -Soil erosion is the washing away of soil by wind or water. The roots of a plant hold the soil firmly. Because of this, soil cannot easily be washed or blown away. So, plants prevent soil erosion.

Detailed explanation-2: -The tiny hairs found on plant roots play a pivotal role in helping reduce soil erosion, a new study has found. The research provides compelling evidence that when root hairs interact with the surrounding soil they reduce soil erosion and increase soil cohesion by binding soil particles.

Detailed explanation-3: -Tree root systems help reduce erosion by holding soil in place. Even after being cut, the roots attached to the stump help stabilize soil for years. Reducing risk of landslides.

Detailed explanation-4: -Fibrous roots spread through the soil and help to hold the soil more firmly than tap roots. This helps prevent washing away of soil and thus, helps in conserving soil.

Detailed explanation-5: -First, plant roots hold sediment in place, helping to stabilize the areas where they are planted. Second, by absorbing water, breaking the impact of raindrops or wave-splash, and physically slowing the speed and diffusing the flow of overland runoff, plants reduce runoff erosion.