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There are 4 eras, and they are the Hadean, Archean, Proterozoic, and Phanerozoic eras.

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What does geologic time have to do with eras?

Eras are subdivisions of larger units of geologic time called eons.


What is the last 3 eras of geologic time?

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How is geologic time organized?

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The four eras of geologic time are the Precambrian, Paleozoic, Mesozoic, and Cenozoic. These eras represent significant periods in Earth's history, each characterized by distinct geological and biological events.


What is Precambian Time?

The basic units of the geologic time scale eras and periods.


Eras of geologic time are subdivided into?

Eras of geologic time are subdivided into periods, which are further subdivided into epochs. These divisions help geologists categorize and study Earth's history and the changes that have occurred over millions of years. Each subdivision represents a distinct period of time with unique geologic events and characteristics.


How many eras make up the geologic time scale?

The geologic time scale is divided into four eras: the Precambrian, Paleozoic, Mesozoic, and Cenozoic eras. Each era represents a distinct span of time in Earth's history with characteristic geological and biological features.


How is geologic time scale organized?

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