"Carbon Dioxide Plays a Vital Role in Dissolving and Precipitation

question 69

Multiple Choice

"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.

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Definitions:

Examination

The act of inspecting or investigating something thoroughly in order to determine its condition or to discover any abnormalities.

Sigmoid

An S-shaped section of the large intestine between the descending colon and the rectum.

Rectum

The final section of the large intestine, terminating at the anus, where waste material is stored before being expelled from the body.

Sigmoidoscope

A medical instrument used for examining the sigmoid colon, part of the lower intestine.