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AlladinOne [14]
3 years ago
13

According to john wesley powell, how much annual rainfall was necessary to grow crops in arid regions like the southern great pl

ains
History
1 answer:
Tomtit [17]3 years ago
8 0

According to John Wesley Powell, the minimum rainfall to grow crops in arid regions was 20 inches  of rain annually only to have a successful farming on the plains; However, with that quantity agriculture would not be uniformly successful from season to season.

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