Question

1. What are the special features of birds which help them to fly?
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Answer 1

Answer:

Flying birds have: lightweight, smoothfeathers – this reduces the forces ofweight and drag. a beak, instead of heavy, bony jaws and teeth – this reduces the force of weight. an enlarged breastbone called a sternum for flight muscle attachment – this helps with the force of thrust.

Answer 2

Answer:

Physical features

Flying birds have: lightweight, smooth feathers – this reduces the forces of weight and drag. a beak, instead of heavy, bony jaws and teeth – this reduces the force of weight. an enlarged breastbone called a sternum for flight muscle attachment – this helps with the force of thrust.

Explanation:

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