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respiratory system

2007-12-01 08:15:49 · 2 answers · asked by Alex K 2 in Science & Mathematics Zoology

2 answers

It has a kind of cartilage skeletal structure, like rings of semi-rigid material to hold it open.

2007-12-01 15:15:59 · answer #1 · answered by The First Dragon 7 · 0 0

it has enforced rings of cartlidge supporting it, like a tube on a dyson

2007-12-01 16:18:41 · answer #2 · answered by josh 111 3 · 0 0

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