Answer:
The effects of tobacco smoke on the respiratory system include: irritation of the trachea (windpipe) and larynx (voice box) reduced lung function and breathlessness due to swelling and narrowing of the lung airways and excess mucus in the lung passages.
Explanation: hope i could help and i hope you have a really good day :)
1: seniors in high school because that is when everyone is wanting to be the most popular.
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Hygiene refers to behaviors that can improve cleanliness and lead to good health, such as frequent hand washing, face washing, and bathing with soap and water.
D. it is safer because no radiation is used
