humans have five levels of necessities of life that will always try to fulfilled all his life. Five levels that can distinguish each human being of his life, the welfare side of the theory have been official admit in the world of psychology.The cascading needs from the most urgent to be presented itself when the previous requirements have been met. Everyone must have been going through the levels-levels, and with a serious attempt to comply, but only a few are able to achieve the highest levels of the pyramid.
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