In a cavern-as compared with its bedrock surroundings-lime readily precipitates from solution because ________.
A) pressures are greater
B) temperatures are greater
C) the water is purer
D) the water can run in streams
E) pressure is lowered and precipitation is possible

Question

Quizplus · Accepted Answer

In a cavern, the pressure is generally lower than in the surrounding bedrock, which facilitates the precipitation of lime from solution. This is because the reduction in pressure can lead to the degassing of carbon dioxide from the water, reducing its ability to hold lime in solution, thus causing precipitation.

In a Cavern-As Compared with Its Bedrock Surroundings-Lime Readily Precipitates