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Radiocarbon dating is an important archaeological tool. For radiocarbon dating to work, the object being tested must ______.

1. be at least 10,000 years old
2.have been made out of rock
3.have gold as an element
4.have been alive at one time

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Respuesta :

shresthaa3344

Answer:

4

Explanation:

because it is used to estimate the date when the organism dead.

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