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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... 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.
... 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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... manner. It is extremelydifficult tocome toany conclusionin regard to the extent ofthe changes which have been thusdefinitely induced. There can, however, be little doubt about many slight changes, such assize from the amount of food ...
... manner. It is extremelydifficult tocome toany conclusionin regard to the extent ofthe changes which have been thusdefinitely induced. There can, however, be little doubt about many slight changes, such assize from the amount of food ...
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... manner as do theclosely allied species of the same genus in a stateof nature, but thedifferences inmost casesareless in degree.Thismust be admitted as true, for thedomestic racesof many animals and plants have been ranked by some ...
... manner as do theclosely allied species of the same genus in a stateof nature, but thedifferences inmost casesareless in degree.Thismust be admitted as true, for thedomestic racesof many animals and plants have been ranked by some ...
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... manner. The caudal and sacral vertebrae vary innumber; asdoesthe number of the ribs,together with their relative breadth and the presence of processes. Thesize and shape of the apertures in the sternum are highly variable; so is ...
... manner. The caudal and sacral vertebrae vary innumber; asdoesthe number of the ribs,together with their relative breadth and the presence of processes. Thesize and shape of the apertures in the sternum are highly variable; so is ...
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... manner, or apoutertillhe sawa pigeon with a crop of somewhat unusualsize;and the more abnormalor unusual any character was whenit first appeared, the more likelyitwould be tocatchhis attention. But to use such an expression as trying to ...
... manner, or apoutertillhe sawa pigeon with a crop of somewhat unusualsize;and the more abnormalor unusual any character was whenit first appeared, the more likelyitwould be tocatchhis attention. But to use such an expression as trying to ...
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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