Pat. 100s of years. Nature had 400 MILLION years. Give scientists a bit more time. So this is your standard definition of life. All these functions must be in place. Ok so all these functions were evolving across the oceans not just in one place. Very gradually over 400 million years. There was no fully formed first life cell that had all these functions. There were trillions and each one evolved from something not quite as complex so you would say that wasn't alive. And so on back to raw chemicals at the start.
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