Natural Science CLEP Prep Practice Exam

Restoration is the process of returning soil that has been lost due to erosion. Fertilizing (A) may help with the chemical makeup of the soil but does not directly address soil replenishment. Tillage (B) involves plowing or digging in the soil and can actually contribute to erosion. Addition (C) is a vague term and could refer to any number of actions, whereas restoration (D) specifically addresses the process of replacing lost soil.