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Geography

Which geomorphological result stems from limestone cave roof collapse?

A)Formation of steeper escarpments
B)Development of polygonal patterned ground
C)Establishment of wider meandering valleys
D)Production of extensive surface sinkholes

💡 Explanation

Surface sinkholes develop due to the mechanism of Karst dissolution, wherein the chemical weathering of carbonate rocks causes subterranean voids; because the caves no longer support the overburden, collapse occurs, therefore sinkholes appear, rather than other terrain features related to glaciation or tectonic lift.

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