Answer:
A society will be considered to has a dynamic and heterogeneous culture if it possessed wide variety of cultural identity (such as different ethnicity, traditions, language, etc.) and their culture are constantly evolving as they interact with one another.
Micro-culture is the type of culture that is not common in a society, because it only held by small percentage of people in that society.
Societies who maintain communication with micro-culture will give a chance for people in that culture to fully express their heritage and assimilate their cultures with the mainstream culture, resulting in a new combination between the two.
This will add the notion that the society has a dynamic and heterogeneous culture.