Different people have different concerns. Some people see the environment as a beautiful thing that we need to protect and conserve. Some people do not care about the environment at all or they do not see the problems as problems.
The four types of diversity that will be examined are: occupation, differences in skills and abilities, personality traits, and value and attitudes. For each type of diversity, the impact on individual behavior will be described. One type of diversity is occupation
I would say it's the Historian because they study history or the past and have to interpret it so they can figure out how to teach it or stop it from happening again.
I would say an investigation is a part-by-part scrutiny of a given problem. An investigation is examining a problem as to for example, what happened, how did it happen, when and why and re the consequences.