Answer:
1/3
Step-by-step explanation:
You can try it I keep getting 3 so maybe that’s the answer
Answer:
Precambrian period
Step-by-step explanation:
Since the Great oxidation period = 2.4 Billion years ago era = Precambrian period.
Micro-fossils attributed to cyanobacteria are abundant during the Proterozoic that came later 2,5 billion years ago and ended 540 million years ago,
Okay...
1 * 45
3 * 15
5 * 9
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