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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... widely and is very numerous, and why another allied species has a narrow range and is rare? Yet these relations areof the highest importance, forthey determinethepresent welfareand, asI believe, the futuresuccess and modification of ...
... widely and is very numerous, and why another allied species has a narrow range and is rare? Yet these relations areof the highest importance, forthey determinethepresent welfareand, asI believe, the futuresuccess and modification of ...
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... widely different character from thatof the otherbuds on the same plant. These bud variations, as they may benamed,can be propagated bygrafts, offsets, etc., and sometimes by seed. They occur rarely under nature, butare far from rare ...
... widely different character from thatof the otherbuds on the same plant. These bud variations, as they may benamed,can be propagated bygrafts, offsets, etc., and sometimes by seed. They occur rarely under nature, butare far from rare ...
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... widely, and willbe recognised assomething distinct and valuable, and will then probably first receive a provincial name.In semicivilised countries, with little free communication, the spreadingofa new subbreed will bea slow process.As ...
... widely, and willbe recognised assomething distinct and valuable, and will then probably first receive a provincial name.In semicivilised countries, with little free communication, the spreadingofa new subbreed will bea slow process.As ...
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... widely different animals. Thus pigshave occasionally been bornwitha sortofproboscis, andif any wild speciesofthe same genus hadnaturally possessed a proboscis, it might havebeenargued thatthishad appearedasa monstrosity; but I have as ...
... widely different animals. Thus pigshave occasionally been bornwitha sortofproboscis, andif any wild speciesofthe same genus hadnaturally possessed a proboscis, it might havebeenargued thatthishad appearedasa monstrosity; but I have as ...
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... forms. Butif hisobservations be widely extended he will in the end generally beable to make up hisownmind; buthe will succeed in this at the expense of admitting much variation, and the truth of this admission will often be disputed.
... forms. Butif hisobservations be widely extended he will in the end generally beable to make up hisownmind; buthe will succeed in this at the expense of admitting much variation, and the truth of this admission will often be disputed.
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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