Between 1982 and 2007, soil erosion on U.S. cropland
A) decreased by 43%.
B) increased by 25%
C) increased by 13%.
D) decreased by 21%.
Correct Answer:
Verified
Q21: Q22: The practice of leaving crop residue on Q23: A plant that is unable to extract Q24: Why is cation-exchange capacity (CEC) an important Q25: Carbon dioxide concentrations in soil are _ Q27: Acidic soils Q28: The term used to denote the part Q29: A few centimeters' thickness of prime farmland Q30: A roughly equal mix of sand, silt, Q31: _ refers to the size and shape
A) are exceptionally rare.
B) cause more
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