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Answer:
1. a. Oxygen
b. Carbon Dioxide
c. Involuntary
2. in the image you can locate I have less time so I can't write.
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1main
Answer:
a. oxygen
b. carbon dioxide
C. Involuntary
2main
1.nose
2.pharynx
3.larynx
4.trachea
5.bronchi
6bronchioles
7.alveoli
8.lungs
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