Human Variation and Evolution

Human variation refers to the differences in physical traits, like height, skin color, and eye color, among individuals. These differences arise from our genes, which are inherited from our ancestors. Evolution is the process by which species change over time through small, successive genetic changes that increase an organism's chances of survival and reproduction. Human evolution has been shaped by natural selection, adapting us to different environments. Together, variation and evolution explain why humans are diverse and how our species has developed unique features over thousands of years.