Definition: Given a scientific passage and an answer, generate a question for the given answer.
Input: Passage: The Dust Bowl taught people that soil could be lost by plowing and growing crops. This led to the development of new ways of farming that help protect the soil. Some of the methods are described in Figure below . Answer: the dust bowl
Output:
What historical event taught people that soil could be lost by plowing and growing crops and encouraged new methods to prevent erosion?