Explanation

Soil conservation protects soil from erosion and degradation. Methods include: cover crops, mulching, contour farming, terracing, windbreaks, and minimum tillage.

Why important: topsoil takes centuries to form but can erode in years. Lost soil reduces fertility, pollutes waterways, and cannot be replaced quickly.

Conservation maintains long-term productivity. Short-term gains from exploiting soil are offset by permanent losses when soil degrades beyond recovery.