Entrades

What is the Proterozoic Eon?

Geologic evidence of the change in atmospheric composition

Archean eon → Cyanobacteria Great oxygenation event (3000 MA)

What is the Archean Eon?

Hadean Eon → Origin of Life (3900 MA)

Meteorites

Hadean Eon → Origin of Earth (4600 MA)

What is the Hadean Eon?

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