(i) Soil conservation means prevention of soil loss from erosion or prevention of reduced fertility of soil caused by over-use, acidification, salinisation or other types of soil contamination.
(ii) Two measures to conserve soil in hilly areas are-
1. Terrace farming- Terraces act as bunds and prevent soil erosion by running water.
2. Contour Ploughing- Ploughing along contours on a slope prevents soil erosion by running water.