 | Charles Darwin - 1875 - Страниц: 504
...destruction, when we remember that ten pe'r cent, is an extraordinarily severe mortality from epidemies with man. The action of climate seems at first sight...cold, acts directly, it will be the least vigorous individuals, or those which have got least food through the advancing winter, which will sufler most.... | |
 | Charles Darwin - 1883 - Страниц: 494
...estimated (chiefly from the greatly reduced numbers of nests in the spring) that the winter of 1854-5 destroyed four-fifths of the birds in my own grounds;...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.... | |
 | Charles Darwin - 1884 - Страниц: 396
...the greatly reduced numbers of nests in the spring) that the winter of 1854-'55 destroyed four fifths of the birds in my own grounds ; and this is a tremendous...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.... | |
 | 1886 - Страниц: 548
...estimated (chiefly from the greatly-reduced numbers of nests in the spring) that the winter of 1854-5 destroyed four-fifths of the birds in my own grounds...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.... | |
 | Henry Coppée - 1893 - Страниц: 560
...the greatly-reduced numbers of nests in the spring) that the winter of 1854-5 destroyed four-iifths of the birds in my own grounds ; and this is a tremendous...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.... | |
 | Charles Darwin - 1896 - Страниц: 408
...estimated (chiefly from the greatly reduced numbers of nests in the spring) that the w inter of 1854-5 destroyed four-fifths of the birds in my own grounds...so far as climate chiefly acts in reducing food, it bring on the most severe struggle between the individuals, whether of the same or of distinct species,... | |
 | Charles Darwin - 1896 - Страниц: 406
...estimated (chiefly from the greatly reduced numbers of nests in the spring) that the winter of 1854-5 destroyed four-fifths of the birds in my own grounds...so far as climate chiefly acts in reducing food, it bring on the most severe struggle between the individuals, whether of the same or of distinct species,... | |
 | Charles Dudley Warner - 1897 - Страниц: 494
...estimated (chiefly from the greatly reduced numbers of nests in the spring) that the winter of 1854-5 destroyed four-fifths of the birds in my own grounds;...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.... | |
 | Henry Coppée - 1900 - Страниц: 544
...estimated (chiefly from the greatly-reduced numbers of nests in the spring) that the winter of 1854-5 destroyed four-fifths of the birds in my own grounds...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.... | |
 | THOMAS G GENTRY - 1900 - Страниц: 566
...altogether independent of the Struggle for Existence; but in so far as it chiefly acts in the reduction of food, it brings on the most severe struggle between the individuals, whether of the same or different species, which subsist on the same kind of fare. Even when climate, extreme cold for example,... | |
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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... 
