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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... In the next chapterIshall discuss the complexand littleknown lawsof variation.Inthe five succeeding chapters,themost apparent and gravest difficultiesin accepting the theory will be given: namely, first, the difficulties of transitions ...
... In the next chapterIshall discuss the complexand littleknown lawsof variation.Inthe five succeeding chapters,themost apparent and gravest difficultiesin accepting the theory will be given: namely, first, the difficulties of transitions ...
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... In the nextchapter I shall consider the geologicalsuccession of organicbeings throughout time; in the twelfth and thirteenth, their geographical distribution throughout space; in the fourteenth, their classification or mutual affinities ...
... In the nextchapter I shall consider the geologicalsuccession of organicbeings throughout time; in the twelfth and thirteenth, their geographical distribution throughout space; in the fourteenth, their classification or mutual affinities ...
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... in the young of the same litter, and in seedlings fromthesame seedcapsule.Atlong intervals of time, out of millions ofindividuals reared inthe samecountryandfed on nearly thesamefood, deviations of structure so strongly pronounced asto ...
... in the young of the same litter, and in seedlings fromthesame seedcapsule.Atlong intervals of time, out of millions ofindividuals reared inthe samecountryandfed on nearly thesamefood, deviations of structure so strongly pronounced asto ...
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Charles Darwin. extraordinary combination of circumstances, appears in the parent —say, once among several million individuals—and it reappears in the child,themere doctrineofchances almostcompelsusto attribute its reappearance to ...
Charles Darwin. extraordinary combination of circumstances, appears in the parent —say, once among several million individuals—and it reappears in the child,themere doctrineofchances almostcompelsusto attribute its reappearance to ...
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... In the caseofstrongly marked racesofsomeother domesticated species, there is presumptive or even strong evidence that ... inthe breeds; andthatsomeof these ancient breeds closely resemble, or are even identical with, those still existing ...
... In the caseofstrongly marked racesofsomeother domesticated species, there is presumptive or even strong evidence that ... inthe breeds; andthatsomeof these ancient breeds closely resemble, or are even identical with, those still existing ...
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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