Multiple Choice
Which of the following describes why a light smoker may become a heavy smoker?
A) Nicotine is broken down more and more quickly by enzymes in the blood.
B) A smoker's brain becomes less sensitized to nicotine as a trigger for the release of dopamine.
C) Nicotine is broken down more and more quickly by dopamine.
D) More and more nicotine binds to dopamine, reducing its effects.
Correct Answer:

Verified
Correct Answer:
Verified
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