Based on fossil evidence, about how long ago did the first single-celled life form appear on Earth? O130 million years ago O1.5 billion years ago O2.5 billion years ago

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asked Feb 17, 2021 188k views

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Based on fossil evidence, about how long ago did the first single-celled life form appear on Earth? O130 million years ago O1.5 billion years ago O2.5 billion years ago

Based on fossil evidence, about how long ago did the first single-celled life form-example-1

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Denys asked

by Denys

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6 votes

Answer:

2.5million

Step-by-step explanation:

I think because it says complex single life

Hernan Velasquez answered Feb 23, 2021

by Hernan Velasquez

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