Question

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

Answer 1

The answer is reduce erosion (a)

Answer 2

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.