Quadrapeds are generally much faster afoot than bipeds. What advantages do humans acheive with bipedal locomotion?
by 
Jim in a Nautilus COAT
ANSWERS: 5
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It puts your eyes higher in relation to the ground, and gives us a better vantage point for hunting:)
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Frees hands, both for climbing and tool use. Raises viewpoint, and gets body further from hot ground. Reduces area exposed to sun in tropics.
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Studies of early hominids suggests that it was the ability to carry things from place to place that facilitated our change to bipedal locomotion.
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One advantage is that our breathing rate operates independently of our gait. American Indians use to run down horses using this advantage. They would run at a steady lope, making the horse continue to run. Because the horse can only breathe in between leg movements, he would eventually run out of breath, enabelling the Indians to simply walk up and put a rope around his neck.
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They can use two limbs while they run allowing the use of weapons, ropes, and ability to carry things like food. :):):)
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