Question

which of the following is the addictive substance in a cigarette?
tar
nicotine
carbon monoxide
carbon dioxide
question 5 1 pts
why is it difficult for people to quit smoking by using e - cigarettes?
because it is fun
because tar is addictive
because it makes it hard to breath
because they contain nicotine
question 6 1 pts
which chemical in cigarettes is responsibe for blackening your lungs?
tar
ammonia
nicotine
carbon monoxide

Explanation:

Nicotine is the addictive substance in cigarettes and e - cigarettes. Tar in cigarettes is responsible for blackening the lungs.

Answer:

Question 1: B. nicotine
Question 5: D. because they contain nicotine
Question 6: A. tar