Anthropology is the study of humanity. The cultural branch of anthropology seeks to make sense of difference or variation among humans. Because culture is acquired through learning, people living in different, separate places or under differing circumstances will develop different ways of thinking about similar things. This belief is exemplified by the earlier discussion of worldview.
Although understanding the differences among cultures is important to understanding how families manage their resources, it is also important to this discipline to seek universalities among humans across cultural and geographic boundaries. Are beliefs and behaviors completely learned, or is there a biological, hereditary basis to them? Anthropologists have surmised that people adapt to their environments in nongenetic ways—through culture. Current concern for the global environment and international relationships has redirected study in this field to the tensions among cultures.