On The Origin Of SpeciesHarper Collins, 22 июл. 2014 г. - Всего страниц: 336 Published in 1859, The Origin of Species by Charles Darwin introduced the theory of natural selection to a newly-receptive public. As a young naturalist on the second voyage of HMS Beagle (1831-36), Darwin collected many plant and animal specimens, and it was his close examination of them that eventually led to his theories on evolution and natural selection. HarperPerennial Classics brings great works of literature to life in digital format, upholding the highest standards in ebook production and celebrating reading in all its forms. Look for more titles in the HarperPerennial Classics collection to build your digital library. |
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... shown how the innumerable species, inhabiting this world havebeenmodified, soastoacquire that perfectionof structure and coadaptation which justly excites ouradmiration. Naturalists continually refer to external conditions, suchas ...
... shown how the innumerable species, inhabiting this world havebeenmodified, soastoacquire that perfectionof structure and coadaptation which justly excites ouradmiration. Naturalists continually refer to external conditions, suchas ...
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... shown in my workon“Variation underDomestication,” there are twofactors: namely,the nature ofthe organism andthe nature ofthe conditions. The former seems to bemuch the more important; for nearly similar variations sometimes arise under ...
... shown in my workon“Variation underDomestication,” there are twofactors: namely,the nature ofthe organism andthe nature ofthe conditions. The former seems to bemuch the more important; for nearly similar variations sometimes arise under ...
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... shown that our domestic varieties manifested a strong tendencyto reversion—that is, to lose their acquired characters, whilekept under the sameconditions and while kept in a considerable body,so that freeintercrossing might check ...
... shown that our domestic varieties manifested a strong tendencyto reversion—that is, to lose their acquired characters, whilekept under the sameconditions and while kept in a considerable body,so that freeintercrossing might check ...
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... shown thatthis statement is not correct; butnaturalists differmuch in determining what charactersareof generic value;allsuch valuationsbeing at present empirical. When it is explained how genera originate under nature, it will be seen ...
... shown thatthis statement is not correct; butnaturalists differmuch in determining what charactersareof generic value;allsuch valuationsbeing at present empirical. When it is explained how genera originate under nature, it will be seen ...
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... shown toan ornithologist, and hewere told that they were wild birds, wouldcertainly beranked byhim as welldefined species. Moreover,I donot believe that any ornithologist wouldin thiscase place the English carrier, the shortfaced ...
... shown toan ornithologist, and hewere told that they were wild birds, wouldcertainly beranked byhim as welldefined species. Moreover,I donot believe that any ornithologist wouldin thiscase place the English carrier, the shortfaced ...
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Другие издания - Просмотреть все
The Origin of Species: By Means of Natural Selection Or the Preservation of ... Charles Darwin Недоступно для просмотра - 2011 |
On the Origin of Species: By Means of Natural Selection; Or the Preservation ... Charles Darwin Недоступно для просмотра - 2017 |
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according adapted admit advantage allied America amount animals appear become believe belonging birds breeds cause certain characters climate closely color common compared complex considerable considered continued crossed descendants developed difficulty distinct domestic doubt effects existing extinct extremely facts favourable fertility flowers formation forms genera genus geological give given greater groups habits Hence hybrids important increase individuals inhabitants inherited insects instance instincts intermediate inthe islands kind known laws less living look manner means modification namely natural selection naturalists nearly observed occasionally occur offspring ofthe onthe organs parent perfect period plants points present preserved principle probably produced remarked represented resemblance respect seeds seems seen separated shown similar single slight sometimes species stage sterility structure successive suppose theory thesame tothe variability variations varieties various vary whole widely young