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 :)
It was a little hard but i think the answer is ``Glands`` beacuse i read about Glands and it said that they are ,<span>chemical substances for use in the body or for discharge into the surroundings
Hope this helps <3 </span>
The cycle is called Yo-Yo dieting.
