When did life first appear on the planet?
A)3.5 billion years ago
B)2.1 billion years ago
C)3.5 million years ago
D)2.1 million years ago

Name: When did life first appear on the planet? A)3.5 billion years ago B)2.1 billion years ago C)3.5 million years ago D)2.1 million years ago
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Question

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The oldest evidence of life on Earth comes from fossilized microorganisms found in rocks that are around 3.5 billion years old.

When Did Life First Appear on the Planet