Description : Which of the following is a Bio-logical method of soil conservations? (1) Contour fanning (2) Contour terracing (3) Gully control (4) Basin listing
Last Answer : (1) Contour fanning Explanation: The biological methods of soil conservation include contour farming, strip cropping, tillage operation, mulching, etc. Contour farming is practiced in the hilly regions or on ... the soil. It reduces run off, saves more water for crops, and reduces soil erosion.