A full bone is definitely heavier than a hollow bone, hope this helps.
bird bones are hollow. that is why they are light
Bird bones are light because they are hollow.
bone marrow..
If the bones were solid they would be much heavier and the animals would not be able to move as quickly.
If you mean "hollow" of a bone... it would be marrow.
No, it is found in the hollow cavity inside the bone.
The hollow cylinder part of the long bone is called the medullary cavity. It is filled with bone marrow and helps reduce the weight of the bone while providing support and flexibility.
No. Yellow bone marrow is found in the hollow cavity inside the bone.
Hollow bones are hollow bones. Birds have hollow bones to make them lighter for flight and to help keep their body temperature down.
yes EDIT: They are not hollow while they are alive, they are filled with 'living bone' which means that the bone will dry up and decay (like tissue or cartilage) leaving a hollow horn after the animals death.
marrow
Fossa