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06-Sep-2017 23:07

The best radioactive element to use to date human fossils is Carbon-14.There are several reasons why, but the main reasons is that Carbon-14 is a naturally occurring isotope in all forms of life and its half-life is about 5730 years, so we are able to use it to date more "recent" forms of life relative to the Geologic Time Scale.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.So we exchanged numbers, solidified a date for the following Friday and began to text -- every single day.

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

Now it is time to put those math skills to good use.

At one half-life, you would have approximately 50% Carbon-14 and 50% Nitrogen-14.

If he wants to move on to the next photo, he should click on one of these buttons.

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In such situations, the victims of scammers get their money back.

One way that helps scientists place fossils into the correct era on the Geologic Time Scale is by using radiometric dating.



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