Why do subcultures form within a society

Often subcultures form within a society as a way for members of that group to express themselves. This is especially true when the values and beliefs of the subculture go against the mainstream values. These types of subculture can be forms of resistance against society, for example, punk.

The answer to this question is  c. pharmaceutical accumulation  reclaimed water refers to the water that being used again after it already  used for agricultural purposes.this type of water often contains pharmaceutical accumulation because of the chemical fertilizer that is used for the plants is absorbed into the water.