 | Rudolph Wilson Chamberlain, Joseph Sheldon Gerry Bolton - 1923 - Страниц: 396
...severe struggle between the individuals, whether of the same or of distinct species, which subsist on the same kind of food. Even when climate, for instance...cold, acts directly, it will be the least vigorous individuals, or those which have got least food through the advancing winter, which will suffer most.... | |
 | Rudolf Wilson Chamberlain, Joseph Sheldon Gerry Bolton - 1923 - Страниц: 392
...instance extreme cold, acts directly, it will be the least vigorous individuals, or those which have got least food through the advancing winter, which will...invariably see some species gradually getting rarer and rarer, and finally disappearing; and the change of climate being conspicuous, we are tempted to attribute... | |
 | Smithsonian Institution. Board of Regents - 1906 - Страниц: 710
...severe struggle between the individuals, whether of the same or of distinct species, which subsist on the same kind of food. Even when climate — for...invariably see some species gradually getting rarer and rarer and finally disappearing, and the change of climate being conspicuous, we are tempted to attribute... | |
 | Smithsonian Institution. Board of Regents - 1906 - Страниц: 734
...Individuals, whether of the same or of distinct species, which subsist on the same kind of food. Kveii when climate — for instance, extreme cold — acts...or those which have got the least food through the advanAng winter, which will suffer most. When we travel from south to north or from a damp region to... | |
 | Smithsonian Institution. Board of Regents - 1906 - Страниц: 708
...severe struggle between the individuals, whether of the same or of distinct species, which subsist on the same kind of food. Even when climate — for instance, extreme cold — nets directly, it will he the least vigorous, or those which have got the least food through the... | |
 | 1860 - Страниц: 484
...climate, for instance extreme cold, acts directly, it will be the least vigorous, or those which have got least food through the advancing winter, which will...invariably see some species gradually getting rarer and rarer, and finally disappearing; and the change of climate being conspicuous, we are tempted to attribute... | |
 | Daniel P. Todes - 1989 - Страниц: 242
...that the dynamics of the struggle for existence differed therefore in different physical settings: Even when climate, for instance extreme cold, acts...will be the least vigorous, or those which have got least food through the advancing winter, which will suffer most.... Each species, even where it most... | |
 | Nelson G. Hairston - 1994 - Страниц: 376
...keeps them in the Arctic? Darwin pointed out the problem in a famous passage in The Origin of Species: When we travel from south to north, or from a damp...invariably see some species gradually getting rarer and rarer, and finally disappearing, and the change of climate being conspicuous, we are tempted to attribute... | |
 | Charles Darwin - 1996 - Страниц: 382
...severe struggle between the individuals, whether of the same or of distinct species, which subsist on the same kind of food. Even when climate, for instance...will be the least vigorous, or those which have got least food through the advancing winter, which will suffer most. When we travel from south to north,... | |
 | Charles Darwin - 2003 - Страниц: 676
...severe struggle between the individuals, whether of the same or of distinct species, which subsist on the same kind of food. Even when climate, for instance...will be the least vigorous, or those which have got least food through the advancing winter, which will suffer most. When we travel from south to north,... | |
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The action of climate seems at first sight to be quite independent of the struggle for existence ; but, in so far as climate chiefly acts in reducing food, it brings on the most severe struggle between the individuals, whether of the same or of distinct... 
