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Inside a bone is something call bone marrow which is made up of red blood cells . Bones are made out of calcium and phosphorus.

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∙ 18y ago
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Emilee hunsaker

Lvl 1
∙ 4y ago
hey, im working on bones to get ready to go to state, do you think you could give me more then one? like all the layers of the inside of a bone? before saterday for me. thanks

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