Which mechanism increases sinkhole formation over limestone aquifers?

💡 Explanation

Lowering the water table causes more aeration of limestone, so acid dissolution by groundwater increases, thereby enlarging subsurface voids and leading to sinkhole collapses, rather than other choices near surface.

• Which process drives magma formation at subduction zones triggering explosive volcanism?
• Which feedback results when thermokarst lake permafrost thaws?
• Which crustal deformation occurs due to hydrated mineral formation during oceanic plate subduction?
• Which thermocline effect occurs as wind forcing decreases within ocean gyres?
• Which process limits surface nitrate replenishment within subtropical gyres?
• Which mechanism explains how mountain ranges enhance precipitation in the windward slopes, creating rain shadow effects?