So we don't repeat our past, learn about past cultures, learn about families that lived long ago, etc
It kept people moving, enabling them to share their personal belief systems.
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Cultural ecology is the study of human adjustment to social and physical environment. It refers to biological processes that enable a population to survive, reproduce and sustain a changing environment. Humans can turn ecologically sustainable behaviors into repetitive customs that become culture.
Humans are animals and unlike any other animal on earth, have the ability to think, reason and process as well as adapt. Developing a culture for humans to sustain the environment is our challenge today. To develop social and survival behaviors that become consistent customs pursuant to sustain our environment.