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muscle,aerodinamics.ect....

2007-03-19 13:58:42 · 1 answers · asked by viva lopez!!! 1 in Science & Mathematics Zoology

1 answers

I think its a combination of strength and the fact that they are shaped to move fast.

2007-03-19 16:46:01 · answer #1 · answered by Carrie 6 · 0 0

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