Question

Look at the statements below about the 1930s.

Loss of grasses left topsoil loose and unprotected.
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High winds frequently blew on the Great Plains.
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Valuable topsoil needed by farmers was thus blown away.
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Which statement belongs on the blank line?
Ranchers allowed their herds to overgraze and damage grasses.
Farmers did not rotate crops, and soil nutrients were used up.
Millions of acres of productive farmland became barren desert.
Farmers harmed the fertile land on which they settled.

Answer 1

Ranchers allowed their herds to overgraze and damage grasses.

Explanation: Overgrazing removed the native grasses that held topsoil in place, leaving soil loose and vulnerable to the frequent high winds that blew the topsoil away.