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study the timeline♡based on fossil evidence about how long ago did the first single-celled life form appear on earth NEED ANSWER ASAP PLSS​
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study the timeline♡based on fossil evidence about how long ago did the first single-celled life form appear on earth NEED ANSWER ASAP PLSS​

study the timeline♡based on fossil evidence about how long ago did the first single-example-1
User Ted Scheckler
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4.1 billion years ago
User Luko
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