The answer is C. A drug is any substance that alters the normal functioning of the body.
A drug is any substance other than the nutrients essential for body changes the normal functioning of the body. It may be physiological or biological which is temporary. A drug is used in the diagnosis, treatment or prevention of a disease to relief the discomfort. A drug producing a state to relief the discomfort. A drug producing a state of casual when used in continuation or in excessively causes addiction known as drug abuse.
2 months the brain usually gets used to something after 2 months so dose muscles AKA (muscle memory)
B) Nervous System
Your Brain, spinal cord, and nerves are part of the large network of cells and fibers that transmit nerve impulses throughout your body.
