Which two substances do geologists use in radiocarbon dating

The carbon-14 atoms combine with oxygen to form carbon dioxide, which plants absorb naturally and incorporate into plant fibers by photosynthesis.

Animals and people take in carbon-14 by eating the plants.

It was developed right after World War II by Willard F.

Scientists know how quickly radioactive isotopes decay into other elements over thousands, millions and even billions of years.

Scientists calculate ages by measuring how much of the isotope remains in the substance.

As you learned in the previous page, carbon dating uses the half-life of Carbon-14 to find the approximate age of certain objects that are 40,000 years old or younger.

In the following section we are going to go more in-depth about carbon dating in order to help you get a better understanding of how it works.

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Both Carbon-12 and Carbon-13 are stable, but Carbon-14 decays by very weak beta decay to nitrogen-14 with a half-life of approximately 5,730 years.

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