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For questions about the long-term change of a specific species, type of creature, or trait, usually through the process of natural selection and reproduction. Ideal questions focus on traits, not entire creatures. Consider also [creature-design].

10 votes

What are the possible attributes of aluminum-based blood?

Hemoglobin's transport of blood relies on its ability to reversibly bind its iron to oxygen. When hemoglobin releases oxygen, the iron captures water. When aluminum binds to ligands, it forms a strong …
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