Final answer:
Physical addiction is characterized by physical cravings and withdrawal symptoms when the drug is withheld.
Step-by-step explanation:
Physical addiction is characterized by physical cravings for a drug and unpleasant reactions when the drug is withheld. It occurs when the body becomes dependent on a substance and experiences withdrawal symptoms when the drug is not consumed. This is different from psychological dependence and emotional dependence, which are more related to the mental and emotional aspects of addiction.
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