cropland used for crops has remained relatively constant for the last 90 years, though it has varied by as much as 14 percent from year to year

cropland used for crops has remained relatively constant for the last 90 years, though it has varied by as much as 14 percent from year to year

cropland used for crops has remained relatively constant for the last 90 years, though it has varied by as much as 14 percent from year to year


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