What is a frost-related benefit of weed removal?

• A. It reduces heat absorption by soils
• B. Bare, moist soils are better at absorbing heat during the day, lowering frost risk
• C. It increases frost risk
• D. It has no effect on frost risk

Answer: (B)

Heat storage in moist soil buffers frost. When weeds are removed, more of the sun’s energy can reach the soil surface, and if the soil is moist, it has a high heat capacity and can absorb and store more heat during the day. That stored heat is released after sunset, helping keep surface temperatures above freezing and reducing frost risk. The other options don’t fit because they’d imply less heat absorption, higher frost risk, or no effect, which doesn’t reflect how moisture and soil heat capacity influence frost formation.