Which landform develops through dissolution accelerating weathering by freeze-thaw?

💡 Explanation

Expansion of karst sinkholes results from acidic water dissolving limestone, because freeze-thaw widens cracks enhancing dissolution. This accelerates the process, therefore sinkholes expand, rather than the other options that involve different mechanisms like erosion or volcanic activity.

• Which outcome decreases the effectiveness of sediment bypassing systems installed alongside coastal barrier islands?
• Which outcome increases substantially when agricultural irrigation causes excessive drawdown in a karst aquifer?
• Which process destabilizes hillsides when permafrost thaws due to warming temperatures?
• Which outcome occurs when a chain of volcanic islands interrupts deep ocean currents?
• Which pedogenic outcome occurs when shield volcanoes weather?
• Which risk increases when excessive sediment load overwhelms a river's alluvial fan system in a tectonically active region?