Question

How do scientist know about ancient living beings?

Answer 1

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Scientists studies PALEONTOLOGY for human or animal remains and artifacts from the past 50,000 years or so, researchers look at levels of carbon 14 in the sample. Also called “radiocarbon,” this isotope is generated by cosmic rays colliding with nitrogen in Earth's atmosphere, says José Capriles, an archaeologist at Pennsylvania State University.

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Answer 2

Answer:

For human or animal remains and artifacts from the past 50,000 years or so, researchers look at levels of carbon 14 in the sample. Also called “radiocarbon,” this isotope is generated by cosmic rays colliding with nitrogen in Earth's atmosphere, says José Capriles, an archaeologist at Pennsylvania State University.

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