The symptoms of HIV can differ from person-to-person and some people may not get any symptoms at all for many years. Without treatment, the virus will get worse over time and damage your immune system. There are three broad stages of HIV infection, with different possible effects.
What are the three levels of cultural complexity that sociologists use to study different cultures? The three levels are perception, aspects that are below the conscious levels, and patterns of behavior. Each of these can be used to help learn about a society. Edit
Schein divides organizational culture into three levels: 1  Artifacts: these artifacts are at the surface, those aspects (such as dress) which can be easily discerned, yet are hard to understand; 2  Espoused Values: beneath artifacts are espoused values which are conscious strategies, goals and philosophies.