Answer :
Answer: C Btw quick tip this should go in health catagory
Explanation: the extra mucus that builds up in the trachea slows down breathing rates making it hard to breathe. It also slows down heart rates without the normal air you need he will feel weak and be mainly affected by his lungs and heart. If it gets to bad the heart will have to little air and have a mass carbon build up causing death. Pls give me brainliest :D
Answer:
The answer is C Circulatory and respiratory
Explanation:
HOPE I HELPED
Can You PLEASE MARK ME BRAINILEST