Bones are a complex structure made up of various compounds, primarily hydroxyapatite, collagen, and water. Therefore, bones are considered a composite material rather than a compound element or a mixture of elements.
The shoulder joint is a complex joint. It is made up of three bones: the clavicle, scapula, and humerus. This joint allows for a wide range of motion in different directions.
calcium
Either of a pair of compound bones forming the sides and base of the skull.
Either of a pair of compound bones forming the sides and base of the skull.
The bones are made of Calcium
A monster made from bones is a skeleton.
Bones
they WERE made out of turtle shells and cattle bones
People are made of skin AND bones.
Teeth and bones are made of some of the same things, such as calcium. Bones have a lot of protein collagen, which helps give bones their structure.
Bones are made of cartilage that fuse into bones throughout childhood. Bones contain yellow marrow, phophorus, and other minerals in small amounts.