Question

aeroplain are in the shape of birds to reduce .....................​

Answer 1

Answer:

air resistance

Explanation:

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Answer 2

Bounding flight

When the bird's wings are folded, its trajectory is primarily ballistic, with a small amount of body lift. The flight pattern is believed to decrease the energy required by reducing the aerodynamic drag during the ballistic part of the trajectory, and to increase the efficiency of muscle use.