In your own words, briefly explain the following terms.
a. infection.

Which action is characterized of mental illness 1.brushing teeth every hour because ones mouth feels dirty ? 2. forgetting to eat breakfast on a busy day? 3.crying three days over a relationship breakup? 4.feeling embarrassed about going to school after failing in front of friends?

Blank is the growth of adnormal cells in the tissues of the body

Which is the term used for a drug that increases the activity of the nervous system