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Rossisdead · Answer 1 · 2021-05-03T19:35:19+0000

The Precambrian Era is the longest era with the least amount of scientific information available. This is because so few fossils have been discovered.

Dominic Cotton · Answer 2 · 2021-05-07T12:06:55+0000

Answer:

im not very sure on this one but im pretty sure it would be BC

Step-by-step explanation:

we dont know anything about humans or animals or how and where they lived.

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