Which one of the following logically explains why parts of some cavern systems are aerated?
A) The main water table is perched above the cavern roofs, allowing air to enter.
B) A nearby, downcutting stream lowered the water table after the caves had formed.
C) The caves formed and later the water table rose.
D) Streams formerly flowing on the surface were diverted into the groundwater system through sinkholes.

Question

Quizplus · Accepted Answer

A nearby, downcutting stream can lower the water table after the caves have formed, allowing parts of the cavern systems to become aerated as they are no longer filled with water. This process exposes parts of the caverns to air.

Which One of the Following Logically Explains Why Parts of Some