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colleen colleen
wrote...
Valued Member
Posts: 17076
10 years ago
Air entering the body is filtered, warmed, and humidified by the
A) upper respiratory tract.
B) lower respiratory tract.
C) lungs.
D) alveoli.
E) All of the answers are correct.
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1 Reply
Sunshine ☀ ☼
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Answer accepted by topic starter
padrepadre
wrote...
Staff Member
Educator
Top Poster
Posts: 21610
10 years ago
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