Question

________feather helps bird to fly .​

Answer 1

Answer:

Flying birds have: lightweight, smooth feathers – this reduces the forces of weight and drag.

Answer 2

Answer: lightweight, smooth feathers –

explanation: 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.