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A(n) __________ is a circular to elliptical, closed depression in karst areas.

A. sinkhole
B. stalactite
C. spring
D. karst


Sagot :

Final answer:

Sinkholes are depressions in karst areas resulting from surface collapse or limestone dissolution, posing risks to structures.


Explanation:

Sinkholes are circular to elliptical, closed depressions in karst areas formed by the collapse of the surface into underground caverns or due to the dissolving of limestone.

Karst topography is characterized by features like sinkholes, caves, and disappearing streams, all created by the dissolution of limestone.

Living in karst areas poses challenges as sinkholes can appear suddenly and cause significant damage to structures above them.


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