Drugs interfere with the way neurons send, receive, and process signals via neurotransmitters. Some drugs, such as marijuana and heroin, can activate neurons because their chemical structure mimics that of a natural neurotransmitter in the body.
Answer:
a stimulus that causes stress
Explanation:
Answer:
A
Explanation:
This seems like the best answer. Let me break it down for you:
Stamina is the ability to sustain prolonged physical or mental effort.
Regularity and Specificity just refer to how much you do and what you do.
Overload and Progression refers to if your doing too much and at what rate.
I'd say 13-14 years of age... usually when kids are starting high school
