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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... animals, one of the first points which strikes us is, that theygenerally differmorefrom each other than do the individuals of any one species or variety in a state of nature. And if we reflect on the vast diversity of the plants and animals ...
... animals, one of the first points which strikes us is, that theygenerally differmorefrom each other than do the individuals of any one species or variety in a state of nature. And if we reflect on the vast diversity of the plants and animals ...
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... animals when reared under new or unnatural conditions. Many facts clearly show how eminently susceptiblethe reproductive systemisto veryslight changes in the surrounding conditions. Nothing ismore easy thantotame an animal, and few ...
... animals when reared under new or unnatural conditions. Many facts clearly show how eminently susceptiblethe reproductive systemisto veryslight changes in the surrounding conditions. Nothing ismore easy thantotame an animal, and few ...
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... animals under confinement, Imay mentionthat carnivorous animals, evenfrom the tropics, breed in this country pretty freely under confinement, with the exception of the plantigrades or bear family, which seldom produce young; whereas ...
... animals under confinement, Imay mentionthat carnivorous animals, evenfrom the tropics, breed in this country pretty freely under confinement, with the exception of the plantigrades or bear family, which seldom produce young; whereas ...
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... animals being seldom much alarmed, seems probable. Manylaws regulate variation, somefew of whichcan be dimly seen ... animal. In monstrosities, the correlations between quite distinct parts are very curious; andmany instancesare given in ...
... animals being seldom much alarmed, seems probable. Manylaws regulate variation, somefew of whichcan be dimly seen ... animal. In monstrosities, the correlations between quite distinct parts are very curious; andmany instancesare given in ...
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... animals and plants, itisnotpossible tocometoany definite conclusion, whetherthey are descendedfrom oneor several wild species.The argument mainly relied on by those who believe in the multiple origin of our domestic animals is, that we ...
... animals and plants, itisnotpossible tocometoany definite conclusion, whetherthey are descendedfrom oneor several wild species.The argument mainly relied on by those who believe in the multiple origin of our domestic animals is, that we ...
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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