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    Most people will replace individual or groups of bushings as they go bad.

    Radiometric dating uses the decay rates of

    Scientists can use certain types of fossils referred to as index fossils to assist in relative dating via correlation.

    Index fossils are fossils that are known to only occur within a very specific age range.

    Absolute dating is used to determine a precise age of a fossil by using radiometric dating to measure the decay of isotopes, either within the fossil or more often the rocks associated with it.

    The majority of the time fossils are dated using relative dating techniques.

    Using relative dating the fossil is compared to something for which an age is already known.

    For example if you have a fossil trilobite and it was found in the Wheeler Formation.

    The rate of decay (given the symbol λ) is the fraction of the 'parent' atoms that decay in unit time.

    Relative dating is used to determine a fossils approximate age by comparing it to similar rocks and fossils of known ages.

    This has to do with figuring out the age of ancient things.

    If you could watch a single atom of a radioactive isotope, U-238, for example, you wouldn’t be able to predict when that particular atom might decay.

    This decay process leads to a more balanced nucleus and when the number of protons and neutrons balance, the atom becomes stable.

    This radioactivity can be used for dating, since a radioactive 'parent' element decays into a stable 'daughter' element at a constant rate.

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