Which term refers to techniques to prevent soil erosion and pollution?

• A. Soil Conservation Methods
• B. Nitrate Standards
• C. Oxygen-Demanding Wastes
• D. Plant Nutrients

Answer: (A)

Techniques to prevent soil erosion and pollution are soil conservation methods. These practices keep soil in place, reduce runoff, and minimize the transport of sediments and attached pollutants into water bodies. Examples include terracing on slopes, contour plowing, strip cropping, cover crops, conservation tillage or no-till farming, windbreaks, and vegetated buffer strips along waterways. By limiting erosion and runoff, these methods protect soil fertility and water quality by reducing sediment loads and nutrient, pesticide, and organic pollution in rivers and lakes. The other options refer to regulatory standards for nitrates, substances that consume oxygen in water, or general plant nutrients, none of which describe techniques to control erosion.