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skelet666 [1.2K]
3 years ago
14

Unlike humans bones, some bird bones have air filled cavities. What advantage does this give birds?

Biology
2 answers:
iogann1982 [59]3 years ago
5 0
It makes them lighter so they are able to fly more easily :)
atroni [7]3 years ago
4 0
It gives them the advantage to fly, hunt, and get away from predators. 
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