Sufficient cause

... ? My short answer would be that all three cases are possible, and there is no way to tell which one is true, for six millions of years are largely sufficient to explain any kind of behavioural shift among the three species, whatever the starting point might have been. I think a similar type of ...

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... in this case would be that the probability of the chance collection of atoms required to lead to the basic building block chemicals should be sufficient to expect those chemical reactions to have arisen at more than just one spot on the planet. I haven't found any clarification on this point ...

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... in this case would be that the probability of the chance collection of atoms required to lead to the basic building block chemicals should be sufficient to expect those chemical reactions to have arisen at more than just one spot on the planet. I haven't found any clarification on this point ...

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... in this case would be that the probability of the chance collection of atoms required to lead to the basic building block chemicals should be sufficient to expect those chemical reactions to have arisen at more than just one spot on the planet. I haven't found any clarification on this point ...

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... causes enough change in genotype or phenotype that they branch off from the lineage they once were to become a new "subspecies" and with sufficient change become a new "species". In farming there are "breeds" of cows which are still able to interbreed with each other ...

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