What causes variation within societies?

Explanation:

Among the major sources of variation within a society are the unique cultural practices of various subgroups.The unique cultural characteristics of these groups form a subculture. In some instances, subcultural practices are consciously intended to challenge the values of the larger society. Sometimes a group rejects the major values, norms, and practices of the larger society and replaces them with a new set of cultural patterns. Sociologists call the resulting subculture a counterculture.

probably since the potency of the cocaine, not a lot, but i've never done any research on cocaine so i wouldn't know, but i would also guess it would determine on the gap between sniffs or if you did it all at once, so i really don't know.