Which of the following is NOT considered a cause of the Dust Bowl?

A. the amount of prairie grass that had been destroyed

B. the lack of farmers in Oklahoma

C. the practice of burning crop remains

D. fields that were left unplanted in the winter months

The following cause that is not considered in the formation of a Dust Bowl is the lack of farmers in Oklahoma. The answer is letter B. in fact, the number of farmers increases due to the high grain prices of Worl War I that encourages farmers to plow millions of acres of natural grass to plant wheat.