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... of calcium is relatively light, and the straight-shell nautilus, which is used as a design template, also uses calcium as the main component.

If you choose calcium directly, there will be much less things to deal with.

Skeletal system is not something that can be achieved overnight. It needs to take into account the density, chemical activity, difficulty of acquisition, etc. of new materials. If you choose calcium as bone material, these data can actually be directly applied to t ...

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