Calcium carbonate is most readily dissolved in ________.
A) water nearly saturated with bicarbonate
B) cool water
C) warm water
D) caverns
E) the process of stalactite formation
Question 2
________ is(are) a rock type occurring when hot, underground water is exposed to air.
A) Joints
B) Bedding planes
C) Travertine and tufa
D) Granite
E) Limestone