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How does relative dating help determine the age of a fossil

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Geology[ edit ] The regular order of the occurrence of fossils in rock layers was discovered around by William Smith.

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Scientific measurements such as radiometric dating use the natural radioactivity of certain elements found in rocks to help determine their age.

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The method of reading the order is called stratigraphy layers of rock are called strata.

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Fragile at the core but with a tough outer shell.

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