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Sagot :
Answer:
Its main function is to allow the unobstructed passage of air to and from the lungs. The trachea is a fairly rigid structure and a good deal of force is ... the lungs and thus oxygen cannot be exchanged and transported to the cells of the body. At its lower end, the trachea divides into two
Explanation:
its not the correct answer bbut i just dont knoe
Answer: It maximizes the number of places where oxygen can be transferred into the blood.
Explanation:
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