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In other words, half (50%) of the Carbon-14 you started with has decayed into the daughter isotope Nitrogen-14.

However, your readout from your radioactivity measuring instrument says you have only 25% Carbon-14 and 75% Nitrogen-14, so your fossil must have been through more than one half-life.

Perhaps the most widely used evidence for the theory of evolution through natural selection is the fossil record.

Half of 50% is 25%, so you would have 25% Carbon-14 and 75% Nitrogen-14.

First, it provides no evidence whatsoever to support their claim that the earth is very young.

If the earth were only 6000–10 000 years old, then surely there should be some scientific evidence to confirm that hypothesis; yet the creationists have produced not a shred of it so far.

This is what your readout said, so your fossil has undergone two half-lives.

Now that you know how many half-lives have passed for your fossil, you need to multiply your number of half-lives by how many years are in one half-life. Your fossil is of an organism (maybe human) that died 11,460 years ago.

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