Which two natural resources are identified as limited contributors to the crisis in Drylandia?

Which two natural resources are identified as limited contributors to the crisis in Drylandia?

• A. Water and land
• B. Water and air
• C. Land and minerals
• D. Air and sunlight

Answer: (A)

The situation hinges on scarcity of two resources that directly limit people’s ability to survive and adapt in dryland environments: water and land. Water scarcity in drylands comes from low and erratic rainfall, high evaporation, and often overuse of groundwater. Without reliable water for drinking, irrigation, and hygiene, livelihoods collapse and vulnerability to drought grows. Land matters because soil productivity declines with degradation and desertification; erosion, loss of soil fertility, and salinization reduce the land’s capacity to support crops and grazing. When both water and land are limited, communities face a tightening loop: less productive land means more strain on water resources, and stressed water supplies accelerate land degradation. The other options don’t fit as well because air and sunlight are typically abundant in drylands, and minerals are not the primary constraint driving the crisis in this context.

The situation hinges on scarcity of two resources that directly limit people’s ability to survive and adapt in dryland environments: water and land. Water scarcity in drylands comes from low and erratic rainfall, high evaporation, and often overuse of groundwater. Without reliable water for drinking, irrigation, and hygiene, livelihoods collapse and vulnerability to drought grows. Land matters because soil productivity declines with degradation and desertification; erosion, loss of soil fertility, and salinization reduce the land’s capacity to support crops and grazing. When both water and land are limited, communities face a tightening loop: less productive land means more strain on water resources, and stressed water supplies accelerate land degradation.

The other options don’t fit as well because air and sunlight are typically abundant in drylands, and minerals are not the primary constraint driving the crisis in this context.