Which mechanism accelerates stalactite growth on submerged, aerated limestone?

💡 Explanation

Stalactite growth accelerates due to enhanced CO₂ transfer via aerated water; increased CO₂ causes increased carbonic acid formation, thereby increasing limestone dissolution and calcite precipitation. This, rather than reduced supersaturation, promotes faster deposition because CO₂ availability becomes the rate-limiting factor only where aerated pockets form underwater.

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