What is a potential consequence of drought on site stabilization?

What is a potential consequence of drought on site stabilization?

• A. It accelerates vegetation growth.
• B. Drought can cause cracking or reduced vegetation.
• C. It has no effect on erosion control.
• D. It increases rainfall runoff.

Answer: (B)

Drought weakens site stabilization by reducing protective vegetation and thinning or killing plants, which leaves soil bare and more exposed to erosion. When moisture is scarce, plants struggle to establish and survive, so root networks that help hold soil together become less robust and surface cover declines. Drying soil also cracks; these cracks reduce soil cohesion and create pathways where water can flow, making erosion more likely when rains do occur. Because vegetation and soil strength are central to stabilization, drought leading to cracking or reduced vegetation is a direct and significant threat. The other options don’t fit: drought doesn’t spur vegetation growth, it diminishes it; it clearly affects erosion control; and rainfall runoff isn’t inherently increased by drought, since the moisture deficit itself is the opposite of heavy rainfall.

Drought weakens site stabilization by reducing protective vegetation and thinning or killing plants, which leaves soil bare and more exposed to erosion. When moisture is scarce, plants struggle to establish and survive, so root networks that help hold soil together become less robust and surface cover declines. Drying soil also cracks; these cracks reduce soil cohesion and create pathways where water can flow, making erosion more likely when rains do occur. Because vegetation and soil strength are central to stabilization, drought leading to cracking or reduced vegetation is a direct and significant threat. The other options don’t fit: drought doesn’t spur vegetation growth, it diminishes it; it clearly affects erosion control; and rainfall runoff isn’t inherently increased by drought, since the moisture deficit itself is the opposite of heavy rainfall.