Answer: Calcium and Phosphorus
Bones are the living tissues that make the body skeleton
Bone Matrix is the complex and sorted framework that gives mechanical support
It consists of materials like inorganic bone salt and collagen fibres
It is rich in Calcium and Phosphorus
It is a protein matrix which contains the above minerals and gets deposited to form bones
It also contains other minerals like sodium, magnesium and bicarbonates in small amounts with Calcium and Phosphorus
Bone matrix provides most of the mass to the bone
Bone matrix also contains organic components
Organic components help resist tension, whereas inorganic components help resist compression