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Human Evolution

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Human Evolution
Human Evolution During the evolution process from ape to man, it could be concluded that the biped and upright walking posture was a requirement for the emergence of human beings while the true difference between human and ape was the ability to make and use tools. Besides, the perfection of upright walking was the result of adapting the natural environment and the motivation for physical evolution of human. This posture positioned the head from the front to the top of body, thus the function of muscles supporting head in nape decreased. At the same time, the face became straight and the sight range enlarged while especially, the liberated hands turned into the labor organ, which expanded the contact scope with the environment and multiple the information sources of brain, stimulating the development of human thoughts and the advancement of tool-making technologies. About 10 thousand years ago, the emergence of original agriculture transformed the human production mode from gathering and hunting to farming. Along with the revolution of instrument of production, human began to conduct fine processing on rough stone tools – polish. This kind of polished tool with cutting edge was far more advanced than the tools in upper Paleolithic age, which was called neolith. During the long period of natural tool using, the transitional creature had finally learned to make tools. While the tool making was a conscious activity, it signified the end of transitional period from ape to human because this conscious initiative was the most important feature to differ the human from animals. Thinking from the biosphere in the whole world, although the evolution of animals varied widely in body form, the function and characteristic shall have the feature of synchronous evolution. However, the human was the miracle of animal world, which had distinctive evolution trail, while no more upright walking animals could be found except

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