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It's an answer to your question "why haven't organisms evolved which use iron in their skeletons". The physical structure of bone would not be improved by incor
by comicjk 9y ago
It's an answer to your question "why haven't organisms evolved which use iron in their skeletons". The physical structure of bone would not be improved by incorporating more iron, so there's no reason for evolution to move in that direction.
- falsedan 9y agoThat's not my question… that's the question I would have preferred the article addressed. I already gave an answer to the question in my original comment. Also, the 'explanation' begs the question, why wouldn't we see a bone replacement evolve that's suited for iron reinforcement? Your clarificiation is a small step down the 'whys', but saying "because bones have evolved to use calcium" is tautological.