Question

what is the primary reason for tobacco addiction?
carbon monoxide
nicotine
tar
formaldehyde
question 2 (1 point)
which substance in tobacco smoke increases the risk of lung diseases like emphysema and copd?
nicotine
tar
carbon monoxide
benzene
question 3 (1 point)
carbon monoxide in tobacco smoke can be easily detected by its smell.
true
false

Explanation:

Nicotine is highly addictive and the main cause of tobacco addiction. Tar in tobacco smoke damages lung tissue, increasing the risk of emphysema and COPD. Carbon monoxide is odor - less and cannot be detected by smell.

Answer:

Question 1: B. Nicotine
Question 2: B. Tar
Question 3: B. False