prpa | 13.01.2010
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Darwin concluded that species are what they appear to be: ideas, which are provisionally useful for naming groups of interacting individuals. “I look at the term species”, he wrote, “as one arbitrarily given for the sake of convenience to a set of individuals closely resembling each other … It does not essentially differ from the word variety, which is given to less distinct and more fluctuating forms. The term variety, again, in comparison with mere individual differences, is also applied arbitrarily, and for convenience sake.”

all mighty

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