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" Variability from the indirect and direct action of the external conditions of life, and from use and disuse; a Ratio of Increase so high as to lead to a Struggle for Life, and as a consequence to Natural Selection, entailing Divergence of Character and... "
Selections from "The Origin of Species", "The Descent of Man", "The ... - Página xi
por Charles Darwin - 1902 - 213 páginas
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The New Englander, Volúmenes19-20

1861 - 1148 páginas
...he defines comprehensively as laws of Growth with Reproduction, Inheritance, and Variability, with a Ratio of Increase so high as to lead to a Struggle...for Life, and as a consequence to Natural Selection. "It is interesting to contemplate an entangled " Edward Everett, at the inauguration of Mr. Webster's...
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Bericht über die Fortschritte der Anatomie und Physiologie

1862 - 638 páginas
...manner have all been produced by laws acting around us. These laws taken in the largest sense , being growth with reproduction ; inheritance which is almost...variability from the indirect and direct action of the external condition of life , and from use and disuse, a ratio of increase so high äs to lead to a...
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Life on the Earth: Its Origin and Succession

John Phillips - 1860 - 262 páginas
...manner, have all been produced by laws acting around us. These laws, taken in the largest sense, being growth with reproduction; inheritance which is almost...variability from the indirect and direct action of the external conditions of life, and from use and disuse; a ratio of increase so high as to lead to a struggle...
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Crosthwaite's Register of facts and occurrences relating to literature, the ...

Crosthwaite and co - 1860 - 622 páginas
...originated, he says : — " These laws, taken in the largest sense, being Growth with ^production; Inheritance, which is almost implied by reproduction;...Variability from the indirect and direct action of the external conditions of life, and from use and disuse ; a Ratio of Increase so high as to lead to a...
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On the Origin of Species by Means of Natural Selection; Or, The Preservation ...

Charles Darwin - 1861 - 470 páginas
...manner, have all been produced by laws acting around us. These laws, taken in the largest sense, being Growth with Reproduction ; Inheritance which is almost...Variability from the indirect and direct action of the external conditions of life, and from use and disuse ; a Ratio of Increase so high as to lead to a...
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The past and present life of the globe, a sketch of the world's life-system

David Page - 1861 - 278 páginas
...all been produced by laws acting around us. These laws, taken in the largest sense, being growth by reproduction ; inheritance, which is almost implied...variability from the indirect and direct action of the external conditions of life, and from use and disuse ; a ratio of increase so high as to lead to a...
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The Past and Present Life of the Globe: Being a Sketch in Outline of the ...

David Page - 1861 - 276 páginas
...all been produced by laws acting around us. These laws, taken in the largest sense, being growth by reproduction ; inheritance, which is almost implied...variability from the indirect and direct action of the external conditions of life, and from use and disuse ; a ratio of increase so high as to lead to a...
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On the Origin of Species by Means of Natural Selection: Or, The Preservation ...

Charles Darwin - 1864 - 472 páginas
...by laws acting around us. These laws, taken in the largest sense, being Growth with Eeproduction ; Inheritance which is almost implied by reproduction...Variability from the indirect and direct action of the external conditions of life, and from use and disuse ; a Ratio of Increase so high as to lead to a...
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On the Origin of Species by Means of Natural Selection, Or, The Preservation ...

Charles Darwin - 1866 - 668 páginas
...manner, have all been produced by laws acting around us. These laws, taken in the largest sense, being Growth with Reproduction ; Inheritance which is almost...Variability from the indirect and direct action of the external conditions of life, and from use and disuse ; a Ratio of Increase so high as to lead to a...
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Analysis of Darwin, Huxley and Lyell, Being a Critical Examination of the ...

Henry A. DuBois - 1866 - 112 páginas
...around us," he says : — " These laws, taken in the largest sense, being Growth with Ke-production ; Inheritance, which is almost implied by re-production...Variability from the indirect and direct action of the external conditions of life, and from use or disuse ;* — a Eatio of Increase so high as to * As an...
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