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Question
question 1-8
according to currently accepted theories on human evolution, human ancestors developed an opposable thumb which led to the manufacture and use of stone tools. stone tools were an important step in human evolution. which change most likely facilitated tool making in early humans?
a decrease in jaw size
an increase in body size
a switch to animal-based nutrition
a shift towards bipedal locomotion
La locomoción bípedal liberó las manos de la función de caminar, lo que permitió a los antepasados humanos usarlas para manipular materiales y fabricar herramientas de piedra. Los otros cambios (disminución del tamaño de la mandíbula, aumento del tamaño corporal, cambio a nutrición animal) no tuvieron un impacto directo en la capacidad de fabricar herramientas como la adopción de la locomoción bípedal.
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a shift towards bipedal locomotion