Evolution, Change over a long time, Ancestor, Family member from long ago, Human, A person like us today, Early humans, People who lived long ago, Hominin, Human relatives from long ago, Archaeologist, Scientist who studies objects made by humans, Tools, Objects used to help work, Paleoanthropologist, Studies ancient human bones, Australopithecus, Lived about 4.4 to 1.4 million years ago, Homo habilis, Earlier species, smaller brain, used simple tools, Homo erectus, Used fire, left Africa, Homo sapiens, Complex language and symbolic art, Bipedalism, Walking on two legs, Opposable thumb, Thumb that grips against fingers, Rift Valley, Turning point in human evolution.

Human evolution

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