Study the timeline.
Based on fossil evidence, about how long ago did the first single-c...
Chemistry, 05.05.2020 10:59 mchillery1028
Study the timeline.
Based on fossil evidence, about how long ago did the first single-celled life form appear on Earth?
130 million years ago
1.5 billion years ago
2.5 billion years ago
4.1 billion years ago
Answers: 1
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