Watersheds, like the one in the image, are areas of land that collect precipitation and funnel it to lakes, streams, and/or wetlands. The erosion caused by this movement of water varies in speed based on a number of factors. Which watershed factor has the MOST impact on the speed of erosion?

Question

Responses
A Plant cover (trees, grasses, etc.) reduces erosion by holding soil in place with roots, and slowing the flow of water.Plant cover (trees, grasses, etc.) reduces erosion by holding soil in place with roots, and slowing the flow of water.
B Water erodes hard soil more quickly than soft soil, because it flows faster over hard soil's compacted, slick surface.Water erodes hard soil more quickly than soft soil, because it flows faster over hard soil's compacted, slick surface.
C Water travels more quickly towards rivers than streams (causing more erosion), because they are larger and absorb more water.Water travels more quickly towards rivers than streams (causing more erosion), because they are larger and absorb more water.
D Precipitation reduces erosion by causing the ground to absorb water, resulting in less surface wear as it travels to lakes and streams.

Answer 1

The watershed factor that has the MOST impact on the speed of erosion is:

A. Plant cover (trees, grasses, etc.) reduces erosion by holding soil in place with roots, and slowing the flow of water.

Plant cover plays a crucial role in stabilizing soil, reducing runoff speed, and minimizing erosion. Vegetation absorbs water, reduces the velocity of surface water flow, and helps anchor the soil, making it less susceptible to erosion.