AP Environmental Science

Answer: C - The name for crops like alfalfa and clover that can be planted in between harvests to help replace the nutrients in the soil is cover crops.

Key Takeaway: Often, soils are ruined not only by erosion, but also by massive nutrient depletion from mono-cropping or overgrazing. Crops like alfalfa or clover can be planted between harvests. These cover crops will replace the nutrients in the soils. Additionally, cover crops also help bind the soil together to prevent erosion.