What was the result of overgrazing, poor soil management practices, and high winds in nebraska, kansas, oklahoma, texas, and eastern colorado in the 1930's?

the answer is "the dust bowl"

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map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.