How are eras and periods of the geologic time scale named?
oceansfossilsthe atmosphere
PrecambrianPaleozoicCenozoic
1 2 3 4
before after during
From what material did the moon form?
Paleozoic MesozoicCenozoic
Which processes produced heat that contributed to the formation of Earth’s different layers? Check all that apply.collision of materialscompaction of materialscooling of low-density metalsradioactive decaysinking of high-density metals
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