Which activity can substantially increase a persons risk of contracting hiv 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?

What factors characterize a healthy relationship that contributes to positive social well-being?

Control center is it involved in homeostasis