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 :)
The answer is B. The testes. Please rate me as the brainliest!
Fertility is the actual output of reproduction, and fecundity is the potential output
D. The petting animals option. Mainly because that answer has nothing to do with food and everything to do with regular germs :)