Author Question: Carbon dioxide plays a vital role in dissolving and precipitation of rocks in the formation of karst ... (Read 67 times)

bio_gurl · **on:** Jul 16, 2018

Carbon dioxide plays a vital role in dissolving and precipitation of rocks in the formation of karst topography. Evaluate this statement.

A) It is false. The statement should read sulfur dioxide, not carbon dioxide.
B) It is partially true. Carbon dioxide does form acid to aid in dissolving limestone but has nothing to do with precipitation of rocks.
C) It is false. Carbon dioxide does dissolve in water to form acid, but only at the surface where water is exposed to air.
D) It is true. Carbon dioxide plays a vital role in these processes.

Question 2

The surface that marks the top of the ground water is called the

A) water table.
B) saturated zone.
C) unsaturated zone.
D) water layer.