Chemistry
Chemistry, 07.11.2019 18:31, Joshyy23

Which of the following events separate geologic time into eras and periods...

Which of the following events separate geologic time into eras and periods?

the appearance and disappearance of volcanoes
the appearance and disappearance of groups of organisms
the creation of new ocean ridges
the number of earthquakes occurring at that time
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Which of the following events separate geologic time into eras and periods?

the appear...

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