One of the common surface features of karst landscapes are sinkholes, also known as ________.
A) travertine
B) dripstone
C) dolines
D) tufa
E) geysers
Question 2
________ are karst features also known as haystack hills.
A) Sinkholes
B) Dolines
C) Speleothems
D) Fumaroles
E) Mogotes