Having variable sexual urges and interests is called the sexual response cycle. sexual orientation. the refractory period. erotic plasticity.

Organic -  derived from plants or animalscorrosive -  capable of destroying by a chemical action  particulate -  tiny particle that can be dispersed in a gas 

Personality is a mixture of characteristics/qualities that form an individual's distinctive persona. it can be influenced by environmental and biological factors; one's culture is a most important factor that shape personality. extreme mood swings, unstable relationships, distorted self-image, impulsive/risky behavior, explosive anger, chronic feelings of sadness/emptiness, etc. these could indicate that someone could have a personality disorder.