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Geologic Time Scale
Discusses how major events in the evolution of life are divided into units and used by scientists to divide up the geologic time scale to refer to times in Earth history.
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Evidence About Earth's Past
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Geologic Time: Introduction
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Describes the basics of the history of geologic time giving examples such as the tenets of geology.
SCI.ESC.509 (Geologic Time Scale - Earth Science)
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