Assume that you want to use radiometric dating to determine the age of a particular layer of rock. You are measuring the decay of radioactive potassium with a half-life of 1.25 billion years. How long would it take 75% of the radioactive potassium to break down?
a. 2.5 billion years
b. 5.0 billion years
c. 5,730 years
d. 0.625 billion years
Ans: a. 2.5 billion years
Biology & Microbiology
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Biology & Microbiology
In the above figure, which letter points to the urethra?
A) A B) B C) C D) D E) E
Biology & Microbiology
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Biology & Microbiology
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rule. __________________ Indicate whether the statement is true or false.
Biology & Microbiology