The Encyclopedia Americana, Volume 8Grolier, 1985 - Encyclopedias and dictionaries |
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Page 510
... natural selection . In 1842 , Darwin wrote a brief sketch of his theory . Two years later , he expanded it into an essay and showed it to the botanist Joseph Dalton but to no one else . Darwin then began working out all the known ...
... natural selection . In 1842 , Darwin wrote a brief sketch of his theory . Two years later , he expanded it into an essay and showed it to the botanist Joseph Dalton but to no one else . Darwin then began working out all the known ...
Page 511
... natural selection working on naturally occurring variations within a popula- tion as the mechanism of evolution , Darwin could not explain the source of the variations . Biol- ogists , who quickly noticed this flaw in Darwin's system ...
... natural selection working on naturally occurring variations within a popula- tion as the mechanism of evolution , Darwin could not explain the source of the variations . Biol- ogists , who quickly noticed this flaw in Darwin's system ...
Page 512
... natural selection . On Social Sciences . Darwin's influence on the social sciences was less than is generally imag- ined . Evolutionary concepts had begun to appear in some of the social sciences many years before the Origin of Species ...
... natural selection . On Social Sciences . Darwin's influence on the social sciences was less than is generally imag- ined . Evolutionary concepts had begun to appear in some of the social sciences many years before the Origin of Species ...
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