How does erosion contribute to soil formation?

How does erosion contribute to soil formation?

• A. It adds organic matter to soil.
• B. It increases soil moisture through capillary action.
• C. It transports minerals and particles, creating soil layers and aiding deposition.
• D. It prevents soil erosion by planting grasses.

Answer: (C)

Erosion contributes to soil formation by moving weathered rock and mineral particles from one place to another and then depositing them in new locations. This transport and deposition build up layers in the soil and help create horizons over time, as sediments settle and interact with decomposed organic matter and other soil-forming processes. That idea—minerals and particles being carried to new spots and forming layered deposits—is why this option best describes erosion’s role in forming soil, especially in places like river deltas or floodplains where sediments accumulate. Adding organic matter, increasing moisture by capillary action, or using grasses to stop erosion all involve related topics, but they don’t capture how erosion itself creates soil layers. Planting grasses helps protect soil from erosion, and organic matter or moisture changes come from other processes in the soil system rather than the transport-and-deposition activity that builds soil layers.

Erosion contributes to soil formation by moving weathered rock and mineral particles from one place to another and then depositing them in new locations. This transport and deposition build up layers in the soil and help create horizons over time, as sediments settle and interact with decomposed organic matter and other soil-forming processes. That idea—minerals and particles being carried to new spots and forming layered deposits—is why this option best describes erosion’s role in forming soil, especially in places like river deltas or floodplains where sediments accumulate.

Adding organic matter, increasing moisture by capillary action, or using grasses to stop erosion all involve related topics, but they don’t capture how erosion itself creates soil layers. Planting grasses helps protect soil from erosion, and organic matter or moisture changes come from other processes in the soil system rather than the transport-and-deposition activity that builds soil layers.