Which statement best contrasts weathering and erosion?

• A. Weathering breaks down material while erosion transports it
• B. Weathering transports material, erosion breaks it down
• C. Erosion increases nutrient storage while weathering releases nutrients
• D. Weathering and erosion perform identical functions

Answer: (A)

Weathering and erosion describe two distinct actions in shaping the landscape. Weathering breaks down rock and minerals in place—through physical forces that crack and crumble, or chemical processes that alter minerals—without moving the material. Erosion is the transport of that weathered material away by agents like water, wind, ice, or gravity. So the statement that weathering breaks down material while erosion transports it captures the essential contrast: breakdown in place versus movement of the material. In terms of nutrients, weathering releases nutrients from minerals into the soil, while erosion tends to remove soil and its nutrients from a site, potentially reducing fertility. The other options either reverse the roles, mix up the processes, or claim they’re identical, which isn’t accurate.