By definition all bone is hard. Before bone is fully formed it is made of cartilage and so is softer but it is not called bone at that time in development. Bone is made of hydroxyapetite mainly a calcium and phosphate salt. This makes it hard.
soft you can bend and hard you can not
Seal's bones are hard.
Mineral salts from calcium and phosphorus compounds are essential for making bones hard and strong. calcium is the most essential mineral to make bones strong but not all bones are as hard as you think some bones are "Spongy" but we just dont notice it. hope this helps if you need to know this....
You don' t move At all
Yes, all fish have bones. In fact, all fish are vertebrates, so they all have vertebrae (a spine or backbone).
You find them throughout the body in adults but more are soft cartilage in babies.
Spiders do not have bones. They have exoskeletons which is a hard outer shell.
Hard.
It contains calcium which is a substance that does not weight. Therefore it makes bones be strong and hard. If you took the calcium, the bones would be flexible and not hard at all.
when you get a big hard throbber and you bang your girl all night long
Yes bones are as hard as rock they can take up to 1,000 pounds of pressure
Bones have a hard coating to protect the nerves, marrow and blood vessels located in the cavity,