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Not so simple. There's variants, 'generations' in the recursive breakdown structure of a multicellular critter. 2 arms, 2 sets of teeth...
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of course, at scales within the organism. One could reasonably define the universe itself and all life within it as one such organism.
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The only entity we know which might fit both criteria is Earth. So, you decide. Is Earth a lifeform? It is alive, evidently, and has form.
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