Answers

2016-06-25T13:00:21+08:00
LUNGS (trachea-is the empty tube that serves as passageway of air into the lungs.Bronchi-are the two branching tubes that connect the trachea to the lungs.Broncioles-are the hairlike tubes that connect to the alveoli.Alveoli-are the airsacs that allows gas exchange in the lungs.)
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it serves as lungs to our body .
ahhh your so funny
2016-06-25T14:09:07+08:00
Nasal cavity
nose 
trachea 
bronchi
bronchiole
alveoli
1 5 1
your so awesome and smart
:)
ahhahahaha...,not so