Birds move their wings using what?
large nose hairs backbones sensory nerve cells neurotransmitters hydrogen and oxygen large arm reach large leg span large back muscles
A B C D E F G H
Birds move their wings using what? (A) large nose hairs (B) backbones (C) sensory nerve cells (D) neurotransmitters (E) hydrogen and oxygen (F) large arm reach (G) large leg span (H) large back muscles