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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... extinction of the less improved forms of life, and leads to what I have called divergence of character.In the next chapterIshall discuss the complexand littleknown lawsof variation.Inthe five succeeding chapters,themost apparent and ...
... extinction of the less improved forms of life, and leads to what I have called divergence of character.In the next chapterIshall discuss the complexand littleknown lawsof variation.Inthe five succeeding chapters,themost apparent and ...
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... I am fully convincedthat species are not immutable; but that those belongingto what are calledthesame genera are lineal descendants of some other and generally extinct species, in the same manner as the acknowledged varieties of.
... I am fully convincedthat species are not immutable; but that those belongingto what are calledthesame genera are lineal descendants of some other and generally extinct species, in the same manner as the acknowledged varieties of.
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... extinct in the wild state. But birds breeding on precipices, and good flyers, are unlikely to be exterminated; and the commonrockpigeon, which has the same habits withthe domesticbreeds, has not been exterminated even on severalof the ...
... extinct in the wild state. But birds breeding on precipices, and good flyers, are unlikely to be exterminated; and the commonrockpigeon, which has the same habits withthe domesticbreeds, has not been exterminated even on severalof the ...
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... extinct or unknown. So many strange contingencies areimprobable inthe highest degree. Somefacts in regardto the coloring of pigeons welldeserve consideration.The rockpigeonisofa slatyblue, with white loins; but the Indiansubspecies, C ...
... extinct or unknown. So many strange contingencies areimprobable inthe highest degree. Somefacts in regardto the coloring of pigeons welldeserve consideration.The rockpigeonisofa slatyblue, with white loins; but the Indiansubspecies, C ...
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Charles Darwin. connecting forms which are now rare were to become totally extinct the three subspecies would hold exactly the same relation to eachotherasdo thefour orfive provisionally admitted species which closely surround the ...
Charles Darwin. connecting forms which are now rare were to become totally extinct the three subspecies would hold exactly the same relation to eachotherasdo thefour orfive provisionally admitted species which closely surround the ...
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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