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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... effects of external conditions, orof habit,or of the volition ofthe plant itself. It is, therefore, of the highest importance to gain a clear insight into the means of modification and coadaptation. At the commencementof myobservations ...
... effects of external conditions, orof habit,or of the volition ofthe plant itself. It is, therefore, of the highest importance to gain a clear insight into the means of modification and coadaptation. At the commencementof myobservations ...
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... effects oftheconditions of life on each individual organism, in nearly thesamemanner asthe chill effectsdifferent menin an indefinitemanner, according to theirstate ofbody or constitution, causing coughs or colds, rheumatism, or ...
... effects oftheconditions of life on each individual organism, in nearly thesamemanner asthe chill effectsdifferent menin an indefinitemanner, according to theirstate ofbody or constitution, causing coughs or colds, rheumatism, or ...
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... effect as in theperiod ofthe flowering ofplants when transported from one climate toanother. With animals the 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 ...
... effect as in theperiod ofthe flowering ofplants when transported from one climate toanother. With animals the 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 ...
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... effects ofuse. Notoneof ourdomesticanimals can benamed which has notin some country drooping ears;and the view which has been suggested that the drooping is dueto disuse of the muscles of theear, from the animals being seldom much ...
... effects ofuse. Notoneof ourdomesticanimals can benamed which has notin some country drooping ears;and the view which has been suggested that the drooping is dueto disuse of the muscles of theear, from the animals being seldom much ...
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... effects of intercrossing, thatonly a singlevariety shouldbe turned loose in its newhome. Nevertheless, asour ... effect would havetobe attributedto the DEFINITE action of the poor soil—that they would, to a large extent, or even wholly ...
... effects of intercrossing, thatonly a singlevariety shouldbe turned loose in its newhome. Nevertheless, asour ... effect would havetobe attributedto the DEFINITE action of the poor soil—that they would, to a large extent, or even wholly ...
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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