dbaskin22
dbaskin22
30-08-2018
Biology
contestada
a bird uses its wings to create so it can fly
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taylorevon5811
taylorevon5811
30-08-2018
the answer is air pressure because without that the bird would not be able to go up, like a balloon has to have a pump , think of the wings flapping as the pump and the bird itself as a balloon, hope this helped
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