The New Encyclopædia Britannica: The new Encyclopædia BritannicaEncyclopædia Britannica, 1992 |
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Page 387
... varying degrees . When lungs are present , carbon dioxide may pass out of the body across the skin , but in some ... varies during the life of the animal . The amphibian heart is generally of a tripartite structure , with a divided ...
... varying degrees . When lungs are present , carbon dioxide may pass out of the body across the skin , but in some ... varies during the life of the animal . The amphibian heart is generally of a tripartite structure , with a divided ...
Page 444
... varies from 0.5 millimetre ( 0.02 inch ) over the Himalayas and 2 mm over the poles in winter , to 8 mm over the Sahara , 54 mm in the Ama- zon region , and 64 mm over India during the wet season . During summer , the air over the ...
... varies from 0.5 millimetre ( 0.02 inch ) over the Himalayas and 2 mm over the poles in winter , to 8 mm over the Sahara , 54 mm in the Ama- zon region , and 64 mm over India during the wet season . During summer , the air over the ...
Page 490
... varies with an average period of about 41,000 years ; the precession of the equinoxes , which refers to the movement of perihelion ( the point when the Earth is nearest to the Sun ) around the path of orbit and which varies with a ...
... varies with an average period of about 41,000 years ; the precession of the equinoxes , which refers to the movement of perihelion ( the point when the Earth is nearest to the Sun ) around the path of orbit and which varies with a ...
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