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consider that thicker and denser bones are stronger for supporting more weight. what might account for...

consider that thicker and denser bones are stronger for supporting more weight. what might account for the differences seen between humans and the chimp (How does this relate to locomotion specifically bipedalism)

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For an organism to be able to walk on two legs(bipedalism), the legs should be able to bear the whole weight of the torso(or the whole body) on two legs. The bone structure on the legs should overcome the stress exerted by that weight. I other words, the legs could break if they are not strong enough to support the body weight. The other method is to reduce the weight in the torso so that there's only enough weight there for the bone on legs to support. This makes the difference between chimps and humans. the torso weight is more in humans but the stronger bones take care of the heavier torso where as in chimps they walk on four legs might be due to the weaker leg bones compared to humans.

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