WHAT IS BONE MADE OFF...

     The bone are not solid. They have a strong layer of compact bone, with inside different kind of bone , known as spongy or cancellous bone, This is a more porous, lightweight type of bone with an irregular arrangement of tissue which allows maximum strength. In the centre of your  bone are two types of bone  marrow is where all new red blood cells, white blood cell, and platelets are made while yellow bone marrow is mainly a fatty tissue.

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