Quote:
Originally Posted by A.DIM
Let me clarify: The most abundant elements in the universe are Hydrgoen, Helium, Carbon and Oxygen. Helium is inert. So the three most abundant, and chemically active, ingredients are the top three with which life on earth is comprised.
I would've thought you knew this?
Indeed, I'm rather certain we've had this discussion before.
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Ah, now you've added "chemically active." Yes, I think we have had this discussion before, which is why I was surprised by your comment. Hydrogen and helium account for 98% of the total in the universe, but the human body is about 10% hydrogen, and the helium contribution is essentially zero. As has been discussed before, abundance is not nearly so much of an issue as the elements that can make complex molecules.