What is one major effect of erosion?

• A. Loss of soil material
• B. Increased soil depth
• C. Higher nutrient retention
• D. Improved structure

Answer: (A)

Topsoil loss is the primary effect of erosion. When rain or wind removes the surface soil, the fertile layer rich in organic matter and nutrients is carried away, reducing the soil depth and its capacity to supply nutrients and hold moisture for plants. Erosion does not increase soil depth; it strips away nutrients with the soil and typically damages soil structure, so nutrient retention decreases and soil structure is harmed rather than improved.