There are three major factors that are related to the development of mental illness (biological, psychological, environmental). describe two biological causes that may influence the development of mental illness in an individual?

Joni is evaluating her relationship with a peer. which characteristic indicates that she has a healthy relationship with that peer? she knows that her peer has a tendency to lie. she has concerns about how her peer dresses. she tends to break curfew when she is with her peer. she is able to calmly discuss issues with her peer.