asyadowney1 asyadowney1

17-11-2016
History

Answered

What separates an eon into eras?

Achanges in rock layers
Bspieces extinctions (changes in types of organisms)
C300 million year chunks
Dtypes of plants and animals

Verified Answer :

shinitora35 shinitora35

04-09-2019

Answer:

c

Explanation era's aren't defined by time but for a duration of time eons are what make it 300 million years

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