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Which of the following best describes the upper respiratory tract? O It takes air in from outside the body. O It is where oxygen and carbon dioxide are exchanged. O It is located inside the thorax. O It
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Which of the following best describes the upper respiratory tract?

O It takes air in from outside the body.
O It is where oxygen and carbon dioxide are exchanged.
O It is located inside the thorax.
O It is not directly involved in respiration.

User Friendly Crook
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A). It takes air in from outside the body.
User Pufos
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