How tall would The Tree of Life, that charts all life on Earth, be?
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That is if we penned it with average handwriting?
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Answer:
According to wikipedia homo sapiens originated in Africa, where they reached anatomical modernity about 200,000 years ago and began to exhibit full behavioral modernity around 50,000 years ago. Choosing the 200,000 year estimate and accounting 20 years for each generation, your tree would have 10,000 levels.
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Other answers
About 3.7 billion years. After that, it depends how you transcribe it. The divisions between species are always a matter of debate, and the further back you go in time the blurrier it gets. There is certainly not now, nor will there ever be, a definitive way to draw the Tree of Life. As we learn more, we will get more details. But some are undoubtedly lost for ever.
Im Alec
how tall? one ply. one very wide ply.
Anonymous
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