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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... certain trees,which has seeds that mustbe transported by certain birds,andwhich hasflowers with separate sexes absolutely requiring the agency of certain insectstobring pollen from one flower to the other, it is equally preposterous to ...
... certain trees,which has seeds that mustbe transported by certain birds,andwhich hasflowers with separate sexes absolutely requiring the agency of certain insectstobring pollen from one flower to the other, it is equally preposterous to ...
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... certain parts alone and in directly by affecting thereproductive system. With respect to the direct action, we must bear in mind that in every case, as Professor Weismann has latelyinsisted, and as I have incidently shown in my workon ...
... certain parts alone and in directly by affecting thereproductive system. With respect to the direct action, we must bear in mind that in every case, as Professor Weismann has latelyinsisted, and as I have incidently shown in my workon ...
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... certain that they are descended from a different aboriginal stock from our European cattle; and some competent judges believe that these latter have had two or three wild progenitors, whether or not thesedeserve to be called species ...
... certain that they are descended from a different aboriginal stock from our European cattle; and some competent judges believe that these latter have had two or three wild progenitors, whether or not thesedeserve to be called species ...
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... certain that all are the descendants of the wild Indianfowl, Gallusbankiva; and thisisthe conclusion of Mr. Blyth, andof otherswho have studied this birdinIndia. In regard toducks and rabbits, some breeds of which differ much from each ...
... certain that all are the descendants of the wild Indianfowl, Gallusbankiva; and thisisthe conclusion of Mr. Blyth, andof otherswho have studied this birdinIndia. In regard toducks and rabbits, some breeds of which differ much from each ...
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... certain characters fromthe rockpigeon, yet thatby comparing the several subbreeds ofthese tworaces, moreespeciallythose brought from distant countries, we can make, between them andthe rock pigeon, an almost perfect series; so we can in ...
... certain characters fromthe rockpigeon, yet thatby comparing the several subbreeds ofthese tworaces, moreespeciallythose brought from distant countries, we can make, between them andthe rock pigeon, an almost perfect series; so we can in ...
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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