Contour plowing, no-till planting, and planting trees to serve as wind buffers are all methods used to __________.
A.
reduce erosion
B.
farm organically
C.
conserve water
D.
increase crop yields
Contour plowing, no-till planting, and planting trees to serve as wind buffers are all methods used to "reduce erosion," since erosion can lead to a decrease in crop output.
