The Physical Basis of SocietyD.Appleton, 1928 - 526 من الصفحات |
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الصفحة vi
... surface can be skimmed in half a school year with a class meeting at least twice a week . Special emphasis should be laid on local con- ditions . Make the student apply the principles to home conditions . Do not try to cover the earth ...
... surface can be skimmed in half a school year with a class meeting at least twice a week . Special emphasis should be laid on local con- ditions . Make the student apply the principles to home conditions . Do not try to cover the earth ...
الصفحة 6
... surface amount to a depth of 40 miles , they must supply heat to the surface as fast as it is lost by radiation into space . The earth there- fore appears not to be growing colder , though losing heat . " 1 One of the best of living ...
... surface amount to a depth of 40 miles , they must supply heat to the surface as fast as it is lost by radiation into space . The earth there- fore appears not to be growing colder , though losing heat . " 1 One of the best of living ...
الصفحة 9
... surface . It is known that the mean specific gravity of the earth is about 5.4 or double the density of the lithosphere . Hence , the core must be much heavier and must weigh between 7 and 8 . The probability is that the core is largely ...
... surface . It is known that the mean specific gravity of the earth is about 5.4 or double the density of the lithosphere . Hence , the core must be much heavier and must weigh between 7 and 8 . The probability is that the core is largely ...
الصفحة 12
... surface and are first pre- sented to the other atom . Thus , lithium , sodium and potassium , probably behave alike because they all have the same external presentment of electrons ; and so with carbon and silicon , with fluorine and ...
... surface and are first pre- sented to the other atom . Thus , lithium , sodium and potassium , probably behave alike because they all have the same external presentment of electrons ; and so with carbon and silicon , with fluorine and ...
الصفحة 17
... surface of the earth the necessary elements , as well as compounds . More and more it becomes clear that the old idea of creation as a past event gives an inadequate picture of the facts . In so far as we can tell , creation is a ...
... surface of the earth the necessary elements , as well as compounds . More and more it becomes clear that the old idea of creation as a past event gives an inadequate picture of the facts . In so far as we can tell , creation is a ...
المحتوى
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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