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What events or other things are used to divide the Precambrian

into the Hadean, Archean, and Proterozoic?

User Naftali
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Answer:

The Precambrian eon is divided into the Hadean, Archean, and Proterozoic based on geological events, such as the formation of the Earth, the cooling of the crust, the emergence of life, and the development of oxygen in the atmosphere. These events are used to mark the boundaries between the different periods of the Precambrian eon.

User Moji
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