The Physical Basis of SocietyD. Appleton, 1916 - 406 من الصفحات |
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الصفحة 8
... changes if the temperature were much higher than it is . Our clothing does not give heat to the body , and is a better conductor of heat than air . It is chiefly of value because it keeps a thin sheet of air next to the body . Of all ...
... changes if the temperature were much higher than it is . Our clothing does not give heat to the body , and is a better conductor of heat than air . It is chiefly of value because it keeps a thin sheet of air next to the body . Of all ...
الصفحة 10
... change . The three great classes of food are the carbohydrates , the sugars and starches , which contain from thirty to forty of these great carbon groups joined together ; the fats , formed by the substitution of hydrogen for part of ...
... change . The three great classes of food are the carbohydrates , the sugars and starches , which contain from thirty to forty of these great carbon groups joined together ; the fats , formed by the substitution of hydrogen for part of ...
الصفحة 15
... change may be noted among the animals . Lizards and snakes gradually disappear along with the thick - skinned but practically hairless elephants and hippo- potami . In their stead wolves , bears and fur - bearing animals appear ...
... change may be noted among the animals . Lizards and snakes gradually disappear along with the thick - skinned but practically hairless elephants and hippo- potami . In their stead wolves , bears and fur - bearing animals appear ...
الصفحة 16
... changes less from day to day and its extremes are less . The tem- perature in large bodies of water varies to some extent with the depth . The temperature in Lake Michigan at the surface in summer is put at 64.9 ° ; at a depth of 18 ...
... changes less from day to day and its extremes are less . The tem- perature in large bodies of water varies to some extent with the depth . The temperature in Lake Michigan at the surface in summer is put at 64.9 ° ; at a depth of 18 ...
الصفحة 25
... change the viewpoint and consider primarily life itself , we will be led to speak of adaptation . Really then control and adaptation are but varying aspects of the same process . There are but two sources of oxygen , air and water , and ...
... change the viewpoint and consider primarily life itself , we will be led to speak of adaptation . Really then control and adaptation are but varying aspects of the same process . There are but two sources of oxygen , air and water , and ...
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