Which of the following sequences correctly describes the movement of air in a bird's respiratory system?
A) lungs; anterior air sacs; posterior air sacs
B) anterior air sacs; posterior air sac; lungs
C) posterior air sacs; lungs; anterior air sacs
D) lungs; posterior air sacs; anterior air sacs
E) anterior air sacs; lungs; posterior air sacs
Correct Answer:
Verified
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