Question

what are sinkholes...​

Answer 1

Explanation:

A sinkhole, also known as a cenote, sink, sink-hole, swallet, swallow hole, or doline, is a depression or hole in the ground caused by some form of collapse of the surface layer. Most are caused by karst processes – the chemical dissolution of carbonate rocks or suffosion processes

Answer 2

Answer:

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Explanation:

A sinkhole is a depression in the ground that has no natural external surface drainage. ... Sinkholes are most common in what geologists call, “karst terrain.” These are regions where the types of rock below the land surface can naturally be dissolved by groundwater circulating through them