Question

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

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

Explanation:

The sod (thick layer of grass and roots) in the Plains held soil in place. Removing it eliminated this natural protection, making soil vulnerable to wind and water erosion, which led to severe issues like the Dust Bowl. Plowing alone didn't cause the erosion, cash crops were a secondary factor, and fallow fields helped preserve soil.

Answer:

D. removing the sod