The origin of species by means of natural selectionРипол Классик, 1929 - 454페이지 |
도서 본문에서
52개의 결과 중 1 - 5개
3 페이지
... climate, food, etc. , as the only possible cause of variation. In one very limited sense, as we shall hereafter see, this maybe true; but it is preposterous to attribute to mere external conditions the structure, for instance, of the ...
... climate, food, etc. , as the only possible cause of variation. In one very limited sense, as we shall hereafter see, this maybe true; but it is preposterous to attribute to mere external conditions the structure, for instance, of the ...
7 페이지
... climates and treatment, I ink we are driven to conclude that this great variability is simply due to our domestic productions having been raised under conditions of life not so uniform as, and somewhat difl'erent from, those to which ...
... climates and treatment, I ink we are driven to conclude that this great variability is simply due to our domestic productions having been raised under conditions of life not so uniform as, and somewhat difl'erent from, those to which ...
10 페이지
... climate. Habit also has a decided influence, as 'in the period of flowering with plants when transported from one climate to another. In animals it has a more marked effect ; for instance, I find in the domestic duck that the bones of ...
... climate. Habit also has a decided influence, as 'in the period of flowering with plants when transported from one climate to another. In animals it has a more marked effect ; for instance, I find in the domestic duck that the bones of ...
16 페이지
... climates. I do not dis ute that these capacities have added largely to the v ue of most of our domesticated productions ; but how could a sav possibly know, when he first tamed an animal, whether it would vary in succeeding generations ...
... climates. I do not dis ute that these capacities have added largely to the v ue of most of our domesticated productions ; but how could a sav possibly know, when he first tamed an animal, whether it would vary in succeeding generations ...
56 페이지
... climate—Protection from the number of individuals—Complex relations of all animals and plants throughout nature—Struggle for life most severe between ndividuals and varieties of the same species; often severe between species of the same ...
... climate—Protection from the number of individuals—Complex relations of all animals and plants throughout nature—Struggle for life most severe between ndividuals and varieties of the same species; often severe between species of the same ...
목차
5 | |
ON was GEOLOGICAL SUCCESSION OF ORGANIC | 155 |
GEOGRAPHICAL DISTRIBUTION | 282 |
Gnoonnmcu DISTRIBUTION Continued | 302 |
RECAPITULATION AND CONCLUSION | 415 |
41 | 449 |
기타 출판본 - 모두 보기
자주 나오는 단어 및 구문
action adapted advantage allied America amount ancient animals appear become believe birds breeds cause characters climate closely common considered continuous crossed descendants difl'erent distinct domestic doubt evidence existing extinct extremely facts families favourable fertility find first flowers follow formations forms genera genus give given greater groups habits hand Hence hybrids important increase individuals inhabitants inherited insects instance instincts intermediate islands kind known land laws less lines living look males manner means migration modification namely natural selection naturalists nearly never observed occur organic origin parent perfect period plants points present principle probably produced range ranked reason regions remains remarked resemble seeds seems seen separated shown single slight sometimes species sterility structure struggle successive suppose tend theory tion trees variability variations varieties vary whole widely