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by gus_massa
1466 days ago
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I think we agree. One you have prokaryote it's probably easy to get multi cellular prokaryotes. My guess is that the transition form eukaryotes to prokaryotes in the hard step. Also, photosynthesis seams to be more complicated than what I expected. Perhaps that is the hardest step. (It's an indirect step to intelligent life, but perhaps a lot of free oxygen to burn food efficiently is necessary for intelligent life.) |
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