Eras are subdivisions of larger units of geologic time called eons.
Eras are divided into periods.
The 3 eras of geologic time is Palezozoic era, Mesozoic era, and Cecozoic era
There are 4 eras, and they are the Hadean, Archean, Proterozoic, and Phanerozoic eras.
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eras and periods
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By eons, eras, epochs, and periods.
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.
The basic units of the geologic time scale eras and periods.
Four eras. that is Cenozoic,mesozoic,paleozoic and precambrian
By eons, eras, epochs, and periods.