the earliest hominines
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Perhaps for: carrying foraged foods from place to place
carrying infants so that fatal falls from mother were minimized; faster food
gathering and longer treks with less fatigue; spotting food sources or predators
from a distance with the increased height and visual perspective of standing on the
hind limbs; or freeing hands to fend off predators by using natural objects as
weapons. In any case, the bipedal adaptation was likely the result of several
factors.
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