Question

why can bones not be folded

Answer 1

Hi
Bones are really very strong made with carbon and carbon is very strong and a bone can even break an iron piece and it is in solid form and not liquid or like liquid and solid
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Answer 2

 hii friend!!!!
Bones are the combination of hard minerals and collagen which makes them so hard that it cannot be bent without breaking. Cartilage contains condrocytes that secretes a gel like substance which combines with fibers to form a flexible matrix. Thus cartilages are flexible and can be bent easily. 
i hope it may help u!!!!!!!!