Question

Bird bong are
different from
pterosaur bones
because​

Answer 1

Answer:

Pterosaur bones were very hollow: even more hollow than than the bones of birds! Like birds (and at least some other dinosaurs), the pterosaurs had complex air sacs invading vertebrae and limb bones, which lightened the skeleton as was part of an advanced respiratory system.

I hope this is clear to you

Answer 2

Answer:

Birds have flight adaptations similar to those of pterosaurs: hollow but strong bones, keeled sternum for flight muscle attachment, and short and stout humeri. However, unlike the pterosaur wing, the bird wing is primarily supported by an elongated radius, ulna, and modified wrist bones (the carpometacarpus).

Explanation:

Hope this will help you