Which risk increases when cave roof support diminishes?

💡 Explanation

The karst window is a result of surface collapse; reduced support allows gravity to exceed material strength, triggering roof collapse. Differential weathering causes erosion, widening joints and fractures that eventually lead to surface breach, rather than other weathering rates.

• Which geomorphic outcome accelerates when thermokarst destabilizes Arctic hillslope permafrost?
• Which mechanism causes orographic lift enhancement when prevailing winds encounter strike-slip faults?
• Which consequence results when excessive accumulation of pyroclastic material on a volcano flank leads to ground saturation during heavy rainfall?
• Which outcome occurs when floodwaters overtop river levees?
• Which effect dominates near the Earth's equator causing air masses to move primarily vertically?
• Which crustal deformation occurs when a subducting oceanic plate's asperities overcome resistance along the plate interface?