a model that assumes that people live in several interconnected environments at the same time:
1) Natural environment: land, water, air, plants and animals.
2) Physical environment: buildings, roads, public places, workplaces, and educational institutions.
3) Social environment: family, friends, colleagues and social institutions.
4) Cultural environment: values, beliefs, customs and traditions.
These environments do not exist in isolation from each other, but overlap and interact, affecting a person’s psychological well-being and behavior.