Which mechanism allows cave formation despite limited rainfall?

💡 Explanation

Hypogene speleogenesis allows cave formation where ascending, chemically-charged groundwater dissolves limestone from below, because this process is independent of surface rainfall, therefore allowing caves to develop in arid and semi-arid regions, rather than requiring rainfall-driven epigene processes.

• Which effect reduces primary productivity when upwelling fails?
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• Which outcome occurs when pyroclastic density currents encounter water?
• Which risk increases when seasonal thawing weakens permafrost integrity?
• Which mechanism causes a positive feedback effect on glacial melting in high-latitude regions?
• Which mechanism causes increased coastal subsidence during an earthquake along a subduction zone lacking sediment?