In the United States, most of the fertile soils of the Midwest were derived from?
A)glaciers
B)volcanic activity
C)decaying organic matter
D)eroded sandstone

Question

Quizplus · Accepted Answer

The fertile soils of the Midwest in the United States were primarily derived from glaciers. As glaciers advanced and retreated over the region during the last Ice Age, they ground up rocks and deposited the resulting sediment, creating rich, fertile soil ideal for agriculture.

In the United States, Most of the Fertile Soils of the Midwest