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HELP PLEASE!!!

Imagine a car driving from the mouth down to the bronchial tree. What would change as the car moves further down the tree?

a) Cartilage is replaced with smooth muscle.

b) The path grows larger.

c) Epithelial tissue turns into squamous membranes.

d) The mucous membrane becomes thinner and thinner.

User Lee Jarvis
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1 Answer

2 votes

Answer:

I believe answer choice A is correct.

Step-by-step explanation:

User Yanli
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