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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... increase, will be considered. This isthe doctrineof Malthus,applied tothe whole animal andvegetable kingdoms. Asmanymoreindividuals ofeach speciesare born than can possibly survive;and as, consequently, there is a frequently recurring ...
... increase, will be considered. This isthe doctrineof Malthus,applied tothe whole animal andvegetable kingdoms. Asmanymoreindividuals ofeach speciesare born than can possibly survive;and as, consequently, there is a frequently recurring ...
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... increased use or disuse of parts has had a more marked influence; thus I find in the domestic duck that the bones of the wing weigh less and the bones of the leg more, in proportion to the whole skeleton, than do the same bones in.
... increased use or disuse of parts has had a more marked influence; thus I find in the domestic duck that the bones of the wing weigh less and the bones of the leg more, in proportion to the whole skeleton, than do the same bones in.
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... increased length of thehorns in the offspring fromashort horned cow by a longhorned bull, though appearing late in life, is clearly duetothe male element. Having alluded to the subject of reversion,Imay hererefer toa statement oftenmade ...
... increased length of thehorns in the offspring fromashort horned cow by a longhorned bull, though appearing late in life, is clearly duetothe male element. Having alluded to the subject of reversion,Imay hererefer toa statement oftenmade ...
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... increasing size of the common gooseberry may be quoted.Wesee an astonishing improvement in many florists' flowers, when the flowers of the present day are compared with drawings made only twenty or thirty years ago. When araceof ...
... increasing size of the common gooseberry may be quoted.Wesee an astonishing improvement in many florists' flowers, when the flowers of the present day are compared with drawings made only twenty or thirty years ago. When araceof ...
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... increased in weight andin early maturity, compared with the stock formerly kept in this country. By comparing the accounts given invarious old treatisesof the former and present state of carrier and tumbler pigeons in Britain, India,and ...
... increased in weight andin early maturity, compared with the stock formerly kept in this country. By comparing the accounts given invarious old treatisesof the former and present state of carrier and tumbler pigeons in Britain, India,and ...
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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