Trivia: What material makes up the majority of human bone?
Collagen
Calcium phosphate
Sodium
Hemoglobin
The correct answer is Collagen
So why is this answer correct? : Bones are mostly made of collagen, followed by calcium phosphate. Collagen is a protein and a connective tissue, and besides bones, it is also a major part of skin, muscles, tendons, and cartilage. Calcium phosphate is a mineral that adds strength, and 99% of the body’s calcium can be found in its bones.