Explanation:
Explanation:Tracheal walls do not collapse when there is less air in it because it is supported by rings of cartilage.
Tracheal walls do not collapse when there is less air in it because it is supported by rings of cartilage.
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Explanation:
Explanation:Tracheal walls do not collapse when there is less air in it because it is supported by rings of cartilage.
Tracheal walls do not collapse when there is less air in it because it is supported by rings of cartilage.
Mark the above answer as brainliest;-;