Excess erosion can be a large problem. What details from the text support this conclusion?
A、Rapid erosion can leave the land desert-like and unable to sustain life.
B、Beautiful and massive structures like the Grand Canyon are made by erosion.
C、The Universal Soil Loss Equation estimates soil erosion by raindrop impact and surface runoff.
D、Weathering and erosion turn rocks into sand. 无解析