Correct option is C
Derwent Whittlesey classified the world’s agricultural systems in 1936 based on climatic and economic conditions.
The first agricultural systems of the world were delineated by _________ in 1936.
Derwent Whittlesey classified the world’s agricultural systems in 1936 based on climatic and economic conditions.
What is the decimal equivalent of hexadecimal number 31?
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