On the Origin of SpeciesHarvard University Press, 2003 - Всего страниц: 553 It is now generally recognized that the publication of Darwin's Origin of Species in 1859 not only decisively altered the basic concepts of biological theory but had a profound and lasting influence on social, philosophic, and religious thought. This work is rightly regarded as one of the most important books ever printed. |
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... continuous , that it has been continuous during a long period . Geology would lead us to believe that almost every continent has been broken up into islands even during the later tertiary periods ; and in such islands distinct species ...
... continuous must often have existed within the recent period in isolated portions , in which many forms , more especially amongst the classes which unite for each birth and wander much , may have separately been rendered sufficiently ...
... continuous area , must often have been formed when the area was not continuous , and when the conditions of life did not insensibly graduate away from one part to another . When two varieties are formed in two districts of a continuous ...
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VARIATION UNDER DOMESTICATION | 7 |
VARIATION UNDER NATURE | 44 |
STRUGGLE FOR EXISTENCE | 60 |
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An Introduction to Behavioural Ecology Nicholas B. Davies,John R. Krebs Недоступно для просмотра - 1993 |