Why Is Carbon Dating Possible

question 48

Multiple Choice

Why is carbon dating possible?

• A) The amount of C-12 is not variable in living organisms.
• B) There is a constant ratio of C-12 to C-14 in living organisms but the ratio changes at a predictable rate after an organism dies.
• C) The amount of C-14 is constant in living organisms.
• D) None of these choices.

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Definitions:

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The first menstrual cycle that occurs after childbirth, signaling the return of fertility and the end of the postpartum amenorrhea period.

Nonoxynol-9

A chemical compound used as a spermicide in contraceptives, which has been found to potentially increase the risk of HIV transmission.

Sexually Transmitted Diseases

Diseases that are transmitted through sexual activity; this term is often used interchangeably with sexually transmitted infections.

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The termination of a pregnancy during the second trimester, typically defined as weeks 13 to 26 of gestation.