The Physical Basis of SocietyD.Appleton, 1928 - 526 من الصفحات |
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الصفحة xiv
... Man Asks Why ? 269 270 Theology versus Science 270 Species . 272 Hybrids 273 Varieties 273 Fossils 273 Geographical Distribution of Life 275 Variation 276 CHAPTER PAGE The Explorers of Evolution 276 Linnæus 276 Buffon xiv CONTENTS.
... Man Asks Why ? 269 270 Theology versus Science 270 Species . 272 Hybrids 273 Varieties 273 Fossils 273 Geographical Distribution of Life 275 Variation 276 CHAPTER PAGE The Explorers of Evolution 276 Linnæus 276 Buffon xiv CONTENTS.
الصفحة 40
... species may have to be measured in eras , generation suc- ceeding generation : the individuals comprising each genera- tion almost identical with those of the distant past . Nature furnishes the environmen and determines the conditions ...
... species may have to be measured in eras , generation suc- ceeding generation : the individuals comprising each genera- tion almost identical with those of the distant past . Nature furnishes the environmen and determines the conditions ...
الصفحة 50
... by controlling reproduction pre - determines the possibilities of distribution ; it fixes the limits beyond which species cannot pass ; it defines broad transcontinental barriers within which they 50 THE PHYSICAL BASIS OF SOCIETY.
... by controlling reproduction pre - determines the possibilities of distribution ; it fixes the limits beyond which species cannot pass ; it defines broad transcontinental barriers within which they 50 THE PHYSICAL BASIS OF SOCIETY.
الصفحة 52
... species that winter in the South could remain in the North if food were abundant . Meadow larks , robins , and others sometimes win- ter in northern states . The winter of 1925-1926 was light on the Pacific coast and thousands of geese ...
... species that winter in the South could remain in the North if food were abundant . Meadow larks , robins , and others sometimes win- ter in northern states . The winter of 1925-1926 was light on the Pacific coast and thousands of geese ...
الصفحة 57
... species show different habits in different environments and there is a vast difference in the habits of species . " Animals living in the same places , and apparently under the same external con- ditions of existence , nevertheless ...
... species show different habits in different environments and there is a vast difference in the habits of species . " Animals living in the same places , and apparently under the same external con- ditions of existence , nevertheless ...
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طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
acres Africa alloy America appears areas Asia atoms average bacteria birds black bass body carbon carbon dioxide cattle cause cells Cenozoic cent century changes chemical chlorophyll climate coal common compounds crops cultivated culture death rate destroy disease distribution domestic animals early earth eaten eggs elements enemies Europe evidence fact fish forms germ germ cells hawk heat horse human hydrogen Ibid important increase Indian insects iron killed known land later light live man's metals mice migration miles moth native nature neolithic nitrogen ocean organisms oxygen Pará rubber tree parasites plants and animals population pounds produce protoplasm R. S. LULL race regions rodents season seeds seems sharp-shinned hawk sheep soil South South America species square mile substances sugar supply surface survive tarpan temperature thousand tion to-day trees tropics types United wild