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→What the theory explains
An explanation would say (1) why these shells came into being, i.e., how species of mollusks with shells appeared on earth; and (2) why lots of other animals have shells or "bony appendages". Am I missing something too obvious for words here? --[[User:Ed Poor|Ed Poor]] 20:27, 30 March 2007 (EDT)
An explanation would say (1) why these shells came into being, i.e., how species of mollusks with shells appeared on earth; and (2) why lots of other animals have shells or "bony appendages". Am I missing something too obvious for words here? --[[User:Ed Poor|Ed Poor]] 20:27, 30 March 2007 (EDT)
: It is a supporting observation to natural selection. It is not a theory on its own. It is not trying to explain anything. --[[User:Mtur|Mtur]] 20:29, 30 March 2007 (EDT)