a9varahalchelseylas a9varahalchelseylas

07-02-2016
Biology

contestada

What kind of bones do birds have?
A. hollow
B. narrow
C. thin
D. cartilage

Respuesta :

ScatterBrained ScatterBrained

07-02-2016

Hollow, that's why birds can fly. There is nothing in the bone to weigh them down.

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