What are the two main organs of the central nervous system

How does heroin affect cellular communication in the brain?

Give an example of how not to miss meals of the days wen you have to much stuff to do?

What's the answer for; avoiding high-pressure situations is an abstinence skill. which of the following is a high-pressure situation? 1. spending time with friends who share your values 2. bringing your date on family outings 3. being at an unsupervised party 4. spending time in public places