Question

how we know any organism how old is this . through bones but which machniesm.......


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Answer 1

Answer:

Throughout a lifetime, bone makes new osteons - minute tubes containing blood vessels. Microscopic exams show these changes, which can indicate adult age to within 5 to 10 years. Younger adults have fewer and larger osteons.

Answer 2

Answer:

By measuring radioactive material in an ancient sample and comparing it to a current sample, scientists can calculate how much time has passed. Radiometric dating allows ages to be assigned to rock layers, which can then be used to determine the ages of fossils.

Explanation:

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