6 Soil Survey Washtenaw County Questions (Overall) Which of the following statements best summarizes your findings regarding human impact on the soil? A. The goal of land management practices should be to exceed tolerable soil loss. B. Only rocks make a good cover to control soil loss. C. Good tillage and farming practices, and proper mulching at constructions site help to decrease soil erosion. D. Soil erosion cannot be controlled and is not a concern