Question

How do bird fly ?
What Bids grow in?

Answer 1

Birds use their strong breast musclesto flap their wings and give them the thrust to move through the air and fly. ... Plane wings have a similar shape asbird wings, but instead of flapping their wings, we use engines to thrust them into the air and create the lift neededto fly.

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Answer 2

Because their density is less than the density of air...the shape of the wing and the ability to move it through the air are the two things needed for bird and plane flight. Birds use their strong breast muscles to flap their wings and give them the thrust to move through the air and fly. In a way, birds use a swimming motion to get the lift needed to fly.

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