The oldest evidence of life on Earth dates back to about how many years ago?
A) 65 million
B) 3.8 million
C) 3.5 billion
D) 570 million

Name: The oldest evidence of life on Earth dates back to about how many years ago? A) 65 million B) 3.8 million C) 3.5 billion D) 570 million
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Question

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The oldest evidence of life on Earth, which includes fossils and chemical signatures of microbial life, dates back to about 3.5 billion years ago.

The Oldest Evidence of Life on Earth Dates Back to About