The huge dust storms that took place in the U.S. Midwest in the 1930s _________________.
A) were triggered by tornados, worsened by global climate change
B) were the result of glacier melt
C) were the result of ozone depletion
D) were the result of polar cells
E) were the result of poor farming and grazing techniques

Question

Quizplus · Accepted Answer

The massive dust storms that took place in the U.S. Midwest in the 1930s were primarily the result of unsustainable farming and grazing practices that led to wind erosion of soil. This was exacerbated by a severe drought that lasted for several years. Tornados, global climate change, glacier melt, ozone depletion, and polar cells were not significant factors in causing the Dust Bowl.

The Huge Dust Storms That Took Place in the U