| So how did our prehuman and early human ancestresses living in the Pleistocene Epoch manage to get those calories? |
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| She was dated at about 3.5 million years old and was a member of a prehuman genus called Australopithecus. |
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| And these anthropogenic biomes are spread about the planet in a way that the ecological arrangements of the prehuman world were not. |
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| Cold-war comeback ReprintsEven theoretically, returning Hawaii to a prehuman existence would be impossible. |
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| Prominent and distinctive in this profile are the nose and the well-defined chin separating modern humans both from prehuman ancestors and from other, contemporary primates. |
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| They went on: Conservation cannot promise a return to pristine, prehuman landscapes. |
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| Over time — perhaps in a period of only a few hundred years — the lake had silted up, leaving the Mare aux Songes as an immaculate record of a recent prehuman moment. |
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| On a global scale, the input by rivers of organic matter to the oceans today is twice the input in prehuman times, and the flux of nitrogen, together with that of phosphorus, has more than doubled. |
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| That may be a stretch, they conceded, but the tools resemble artifacts from the stone technology known as Acheulean, which originated with prehuman populations in Africa. |
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