Whoever answers first gets brainli... Why do the birds wings move down when it flies? A. The wings need to go down some of the time to reduce friction B. The wings need to point in the direction of force

Whoever answers first gets brainli...

Why do the birds wings move down when it flies?
A. The wings need to go down some of the time to reduce friction
B. The wings need to point in the direction of force of gravity
C. The wings move up to down to avoid the friction between the air and the wings.
D. The wings push down on the air to overcome gravity.

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