Deflation affected the dust bowl in the 1930s by

Lowering the land. The Dust Bowl affected Iowa by blowing strong gust towards West/Central Iowa. It caused food shortages and caused many farmers to abandon their homes and head to the west. They could not eat because there was so much dirt in the food. People were wasting their money on food when they wouldn't even eat it. They had to kill jackrabbits by capturing them in a fence and people would hop over, kill them, and then eat them afterwards. If you would like to read a fascinating book about the Dust Bowl era, try The Worst Hard Time: The Untold Story of Those Who Survived the Great American Dust Bowl. It read like a novel but is sadly true.

Hope it helps!

Where is the map? explain the choices?