List eight things that can be considered a part of a person's environment.

I am going to assume that you mean 8 things that a part of a person's health environment and not part of an ecological definition of environment.  

A person's health environment is comprised of things that a person can control and some things that a person can not control.  

A person's genetics, for example, is part of a person's health environment, but they cannot be controlled.  That makes them less interesting to talk about in my health class though.  Nothing can be done about them, and I like to teach students about the things that they can control around them to improve their health environment.  

A person's health triangle is made up of three segments. The social segment, the emotional/mental segment, and the physical segment.  A person's total health includes all three segments, and the environment can be used to hurt or help any of those three sections.  Generally speaking, a person's health "environment" is divided into two parts -- physical environment and social environment.  

A person's family is part of a person's social health environment and can affect all three parts of the triangle -- especially emotional.  

Air quality is part of the physical environment and can affect the physical segment.  Included within air quality is more than just smog though.  Pollen and dust levels need to be taken into account for allergy reasons.  

Friends and their influences are part of the social environment.  They can influence many of a person's health habits.  But friends can also affect a person's physical environment.  For example, I might be friends with a heavy smoker.  I don't smoke, but the second hand smoke is detrimental to my health.  

A person's work environment is another piece of the overall social environment that can affect total health.    

Diet and exercise are two more parts of the health environment.  

Stress and stress management strategies are two more parts of a person's health environment.  It's okay to have high levels of stress . . . if you can appropriately manage the stress.  

One last major piece of a person's health environment is the culture that a person is from or participates in.  Culture will include beliefs, customs, and behaviors of a group.  A particular group culture might practice healthy eating habits.  If you are a member of that culture, chances are you practice those healthy practices too.