Answer:
A(n) is a chemical substance used to treat, prevent, or diagnose a disease or alter one or more functions of the body.
Step-by-step explanation:
A(n) DRUG is a chemical substance used to treat, prevent, or diagnose a disease or alter one or more functions of the body.
Example: Tylenol (Acetaminophen), Is a Drug that is used to relieve pain, head aches, and reduce fever.
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