Stalagmites Can Be Radiometrically Dated Because

question 56

Multiple Choice

Stalagmites can be radiometrically dated because

• A) like tree rings, the calcium carbonate layers vary in thickness by year.
• B) carbon-14 decays to nitrogen 14 in the carbonate.
• C) uranium-234 substitutes for calcium and decays to thorium-230.
• D) fission tracks in apatite in the structures can be dated.

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Definitions:

Depression

a mental health disorder characterized by persistent feelings of sadness, loss of interest in activities, and various emotional and physical problems, significantly affecting daily functioning.

Behavioral

Relating to the actions or reactions of a person or animal in response to external or internal stimuli, often studied in psychology and behavioral sciences.

Mental

Relating to the mind or psychological processes.

Performance

The act of carrying out or accomplishing an action, task, or function, often measured against known standards of accuracy, completeness, and speed.