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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... insects . Let us now suppose a little sweet juice or nectar to be excreted by the inner bases of the petals of a flower . In this case insects in seeking the nectar would get dusted with pollen , and would certainly often transport the ...
... insects of the same species , in the same nest , presenting gradations of structure ; and this we do find , even often , considering how few neuter - insects out of Europe have been carefully examined . Mr. F. Smith has shown how ...
... insects , 416 Whales , fossil , 303 Wheat , varieties of , 113 White Mountains , flora of , 365 Wings , reduction of size , 134 Wings of insects homologous with branchiae , 191 ; rudimen- tary , in insects , 451 Wolf crossed with dog ...
Содержание
VARIATION UNDER DOMESTICATION | 7 |
VARIATION UNDER NATURE | 44 |
STRUGGLE FOR EXISTENCE | 60 |
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Publications of the Biological Services Program Biological Services Program (U.S.) Полный просмотр - 1978 |
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An Introduction to Behavioural Ecology Nicholas B. Davies,John R. Krebs Недоступно для просмотра - 1993 |