Before the Dust Bowl era, farmers had failed to rotate crops or __________, which contributed to severe topsoil erosion in the Great Plains.

Farmers in the Great Plains often plowed up native grasses without rotating crops or planting windbreaks. Windbreaks—rows of trees or other vegetation—help slow the wind and keep topsoil from blowing away. The correct choice is “plant windbreaks.”

AI-written and checked against the verified answer.