The most important thing in my opinion to stay healthy is to diet and exercise.
It can take years for HIV symptoms to develop. D. several years is your answer
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Your peers are people your age, which are most likely your friends. Peer pressure is when they have an influence on you to do something.
The answer is C
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Answer:
Forms of passage of substances across the blood–brain barrier. (A) Passive diffusion: fat-soluble substances dissolve in the cell membrane and cross the barrier (e.g., alcohol, nicotine and caffeine). Water-soluble substances such as penicillin have difficulty in getting through.
