Limestone Reefs and Salt Deposits Are Important Rocks in the Reconstruction

question 39

Multiple Choice

Limestone reefs and salt deposits are important rocks in the reconstruction of Earth's history because they ________.

• A)can be used to infer the ancient climate of Earth;they are deposited in environments that are restricted to warm climates
• B)automatically provide age information;all such deposits occurred between 200 and 400 million years ago
• C)are deposited in warm climates today,but there is good reason to think that they were deposited in cold climates millions of years ago
• D)pinpoint the locations of old subduction zones

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Definitions:

Carbonic Acid

A weak acid formed in solution when carbon dioxide is dissolved in water, playing a significant role in the carbon cycle and respiratory gas exchange.

Hypercapnia

Higher than normal levels of carbon dioxide in the blood or tissues.

Acidic

A term describing a substance with a pH less than 7, which is characteristic of having a higher concentration of hydrogen ions.

Hyperventilating

Excessive and fast breathing that can lead to a decrease in carbon dioxide levels in the blood, often triggered by stress or panic.