The correct answer is: " digestion " .
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Hope this helps!
Best wishes to you!
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You can identify quackery by asking questions and reading reviews :)
1.) Nose
2.) Mouth
3.) Larynx
4.) Lung
5.) Right Bronchus
6.) Diaphragm
7.) Pharynx
8.) Trachea
9.) Left Bronchus
10.) Bronchiole
11.) Alveoli
12.) Throat
