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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... individuals of any one species or variety in a state of nature. And if we reflect on the vast diversity of the plants and animals whichhave been cultivated, and which have varied during all ages under themostdifferent climates and ...
... individuals of any one species or variety in a state of nature. And if we reflect on the vast diversity of the plants and animals whichhave been cultivated, and which have varied during all ages under themostdifferent climates and ...
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... individuals exposed to certain conditions during severalgenerations are modifiedinthe same manner. It is extremelydifficult tocome toany conclusionin regard to the extent ofthe changes which have been thusdefinitely induced. There can ...
... individuals exposed to certain conditions during severalgenerations are modifiedinthe same manner. It is extremelydifficult tocome toany conclusionin regard to the extent ofthe changes which have been thusdefinitely induced. There can ...
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... individuals living together, may be considered as the indefinite effects oftheconditions of life on each individual organism, in nearly thesamemanner asthe chill effectsdifferent menin an indefinitemanner, according to theirstate ofbody ...
... individuals living together, may be considered as the indefinite effects oftheconditions of life on each individual organism, in nearly thesamemanner asthe chill effectsdifferent menin an indefinitemanner, according to theirstate ofbody ...
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... individuals,though taken youngfrom astateofnature perfectly tamed, longlived, andhealthy (of which Icould give numerous instances), yet having their reproductive system so seriously affected by unperceived causesas to fail to act, we ...
... individuals,though taken youngfrom astateofnature perfectly tamed, longlived, andhealthy (of which Icould give numerous instances), yet having their reproductive system so seriously affected by unperceived causesas to fail to act, we ...
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... individuals escape: Professor Wyman has recently communicated to me agood illustration ofthis fact; on askingsome farmersin Virginiahow itwas thatall theirpigs were black, they informed him that the pigs ate the paintroot (Lachnanthes) ...
... individuals escape: Professor Wyman has recently communicated to me agood illustration ofthis fact; on askingsome farmersin Virginiahow itwas thatall theirpigs were black, they informed him that the pigs ate the paintroot (Lachnanthes) ...
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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