The Physical Basis of SocietyD.Appleton, 1928 - 526 من الصفحات |
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الصفحة x
... Tropics World Population Influences of Nature upon Man Physical Effects 63 65 68 69 69 Influences on Occupations and Activities Influences on Migration and Commerce 71 74 Psychical Influences Civilization and Climate 75 78 The Organic ...
... Tropics World Population Influences of Nature upon Man Physical Effects 63 65 68 69 69 Influences on Occupations and Activities Influences on Migration and Commerce 71 74 Psychical Influences Civilization and Climate 75 78 The Organic ...
الصفحة 50
... tropics is limited by the cold of the north , while the southward extension of colder types is limited by the heat . Merriam has called this the " Law of Temperature Control " and thus states it : " Temperature by controlling ...
... tropics is limited by the cold of the north , while the southward extension of colder types is limited by the heat . Merriam has called this the " Law of Temperature Control " and thus states it : " Temperature by controlling ...
الصفحة 51
... tropics where growth is possible throughout the year with the frigid regions with their short summers and short growing seasons . Com- pare the dense tropical forests with their long vines with the little dwarf willows and aspens of the ...
... tropics where growth is possible throughout the year with the frigid regions with their short summers and short growing seasons . Com- pare the dense tropical forests with their long vines with the little dwarf willows and aspens of the ...
الصفحة 52
... tropics nor our alligator skins from Canada . For reasons not wholly understood the gaudily colored birds like the toucans of the tropics are con- trasted with the gray and white grouse and geese of cold lands . Plants must produce ...
... tropics nor our alligator skins from Canada . For reasons not wholly understood the gaudily colored birds like the toucans of the tropics are con- trasted with the gray and white grouse and geese of cold lands . Plants must produce ...
الصفحة 63
... tropics and the polar regions . No race has enough to be of great protection against the cold . In general the Europeans have heavy beards as compared with the Negroes , and this might be cited as an indication of climatic adaptation ...
... tropics and the polar regions . No race has enough to be of great protection against the cold . In general the Europeans have heavy beards as compared with the Negroes , and this might be cited as an indication of climatic adaptation ...
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acres Africa America appears areas Asia atoms average bacteria believe birds body carbon carbon dioxide cause cent century cephalic index changes characters chromosomes civilization climate color common copper crops cultivated culture danger Darwin death rate destroy disease domestic early earth eggs environment Europe European evidence fact feeble-minded females fish forms germ cells given heredity human Ibid important increase Indians individual inheritance insane insects iron killed known land later light living male man's marriage metals miles natural selection nature Negro neolithic organisms ovum oxygen Pará rubber tree parasites physical population possible pounds present problems produced R. S. LULL race seeds seems social South South America species square mile supply T. H. MORGAN temperature things thousand tion to-day trees tropics types United wild woman women