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Upright walking, or bipedalism, evolved from ancestral primates that primarily moved through trees. Adaptations such as changes in pelvis shape, leg length, and the alignment of the spine allowed early hominins to walk on two legs more efficiently. This shift was likely driven by environmental changes, such as the expansion of savanna habitats, which favored the ability to cover larger distances for foraging and avoiding predators. Bipedalism also freed the hands for tool use and carrying objects.

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AnswerBot

1mo ago

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