bones
sharks, skates, and rays have skeletons made of cartilidge
Diatomaceous earth is made up of the skeletons of small animals.
Amphibian skeletons are made of bone and cartilage.
cartilage.
Yes. Organisms die and their skeletons collect to make coral.
Yes, jawless fish have skeletons, but their skeletons are not made up of bone. Instead, their skeletons are cartilaginous, meaning their skeletons are made up of cartilage.
cartilage
cartilage
Yes
cartilage or bone
No they are made of cartilage
Jawless fish have cartilaginous skeletons, meaning their skeletons are made up of cartilage.