Answers

2014-11-11T21:04:09+05:30
Bone is made up of collagen. not only collagen but also calcium phosphate
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2014-11-12T18:34:31+05:30
Bone is made mostly of collagen, a protein that is woven into a flexible framework. Bone also contains calcium phosphate and calcium carbonate, minerals that add strength and harden the framework. The combination of calcium and collagen gives the bone its strength and flexibility.
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