Question

1. which of these activities doomed the plains to soil erosion?

using plows
letting fields lie fallow
planting cash crops
removing the sod

Explanation:

The native sod of the Great Plains consisted of dense, deep-rooted grasses that held soil in place against wind and water. Removing this sod eliminated the natural soil stabilization, leaving the exposed topsoil highly vulnerable to erosion, which led to severe issues like the Dust Bowl. Letting fields lie fallow helps restore soil health, plowing alone did not cause the widespread erosion, and cash crops were not the direct cause compared to removing the protective sod.

Answer:

removing the sod