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What is the difference between bone and cartilage?

Answer:
Bone is distinguished from cartilage by the presence of inorganic calcium salts in its ground substance, which makes the ground substance rigid.
Bone is also what marrow is made of, except for sharks and a few other animals which are made entirely out of squishy cartilage. Although, bone and cartilage are both specialized connective tissues.
First answer by ID2899647033. Last edit by 4Jays. Contributor trust: 1564 [recommend contributor recommended]. Question popularity: 18 [recommend question].