Question

which feature makes birds unique Option (a) Ability to fly Option (b) Having feathers Option (c) Laying eggs

Answer 1

Answer:

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