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Alik [6]
3 years ago
9

Why do birds have hallow bones?

Biology
1 answer:
kari74 [83]3 years ago
8 0
The hollow<span> part of a </span>bird bone<span> isn't wasted space. In some </span>bones<span>, the </span>hollow<span> cavities contain extensions of the air sacs from the lungs. These air sacs help the </span>bird<span> to get the oxygen it needs to fly quickly and easily.</span>
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