Biological and Cultural Evolution – are the key concepts in the study of origins of modern humans
Biological evolution – refers to changes, modifications, and variations in the genetics and inherited traits of biological populations from one population to another.
Natural selection – traits that enhance survival and reproductive success increase in frequency over time.
Cultural evolution or sociocultural evolution – changes or development in cultures from a simple form to a more complex form of human culture. Explains why human societies change through time.