The document discusses the origins of humans according to the scientific theory of evolution. It describes how early humans evolved from primates over a long period of time through processes like natural selection, random mutation, and survival of the fittest. Specifically:
- Humans share a common ancestor with chimpanzees, estimated to have lived 7 million years ago.
- Early hominids like Australopithecus were the first to walk upright (bipedalism), which freed their hands and allowed for tool use.
- Adaptations like bipedalism helped hominids travel longer distances in search of food on the African savanna as the climate changed.
- Gradual mutations over millions