Question

4. How are the bones of birds different from those of other vertebrates?
5.What is the most notable characteristic of birds that is not found in any other group
of animals?​

Answer 1

Answer:

4 . Most birds have lightweight skeletons and their bones lack bone marrow (hollow bones). Unlike other animals, birds have the two clavicles fused forming the furcula or bone-wish which is both flexible and strong enough to support the shoulder girdle during flapping.

5 . Birds have unique characteristics feature- like wings which are not present in any other animals

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Answer 2

Explanation:

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