If an isotope has a half-life of 4 million years, and a fossil is 16 million years old, how much of the original isotope will be found in the fossil?
A. one-half of the original amount
B. one-quarter of the original amount
C. one-eighth of the original amount
D. one-sixteenth of the original amount
Answer:D
If an isotope has a half-life of 4 million years, and a fossil is 16 million years old, how much of the original isotope will be found in the fossil?
A. one-half of the original amount B. one-quarter of the original amount C. one-eighth of the original amount D. one-sixteenth of the original amount