Erosion is best described as what?

• A. A chemical reaction
• B. A type of weathering in which surface soil and rock are worn away through the action of glaciers, water and wind
• C. Deposition of sediments
• D. Soil formation

Answer: (B)

Erosion is the process of removing and moving soil and rock from their original location by natural forces such as water, wind, and ice. It explains how material is not only worn away but also transported to new places, shaping landscapes over time. The description that fits best says that erosion involves wearing away surface soil and rock through the action of glaciers, water, and wind, which captures both the removal and relocation of material.

Think of a river carrying sediment downstream, wind blowing dust across a plain, or a glacier plucking rocks out of the ground and transporting them. These are all eroding processes because they involve material being removed from where it sits and moved elsewhere.

Contrast this with the other ideas: a chemical reaction describes changes in chemical composition rather than movement of material; deposition is the process of sediments settling out and being laid down after they have already been moved; soil formation refers to producing new soil. These describe different stages or types of landscape change, not erosion itself.