The amount of 
C in a bone is about one-fourth of what one would expect based on the relative abundance of 
C and 
C. Since the half-life of 
C is a bit less than 6000 y, the
bone’s age is closest to
A. 36,000,000 y.
B. 24,000 y.
C. 12,000 y.
D. 4000 y.
E. 1500 y.
C. 12,000 y.
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What will be an ideal response?
Which of the following sequences correctly describes the stages of life (from beginning to end) for a low-mass star?
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Saturn's belts and zones are obscured by haze high in its atmosphere
a. True b. False Indicate whether the statement is true or false
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Fill in the blank(s) with the appropriate word(s).