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1. I am the gas that is given off during exhalation
R B O I A I C O D D N E X
2. I go through the air sacs and into the blood.
N G E X Y O
3. I am a long tube connecting your mouth to your lungs.
A A C H E R T
4. I serve as a passageway for both food and air.
H N P X R A Y
5. I am made of body parts that help you breathe in oxygen and breathe out carbon dioxide.
S I R S R A E O E T R Y M Y P S T