Many houses are built on the sides of hills. Which of these actions would best prevent houses from sliding down hills after heavy rainfalls?
increasing the slope of the hill spraying herbicides on the hill adding plants to the hill removing grass from the hill
Question: Many houses are built on the sides of hills. Which of these actions would best prevent houses from sliding down hills after heavy rainfalls?
A. increasing the slope of the hill
B. spraying herbicides on the hill
C. adding plants to the hill
D. removing grass from the hill
Answer: