Geologic Time Answers

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How are eras and periods of the geologic time scale named?

They are named for the places where geologists first described rocks or fossils from that time.

Their names are based on the names of scientists who discovered the rocks and fossils.

They are named after plants and animals that lived during that time.

Their names are based on the number of centuries within that length of time.

Scientists used [___] dating to determine Earth’s age.

Answer:

radiometric

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