Change in a population over time as the result of differential competitive success among imperfect replicators.
And since my definition is so concise, I'll use up some of the remainder of my 90 word issue by offering one of my favorite poems, brought to mind by this:
Note that for reference, this paragraph, including these last sentences, contains 90 words as counted by Microsoft Word.
There's only one "r" in this poem
Unless, of course, you count that one.
And then there's the one in the word "course".
And "there" too, and "word" and...
Oh, never mind.
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