The National Geographic Magazine, Volume 205, Issues 4-6National Geographic Society., 2004 - Geography |
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Page 1
Brittle at the surface , rocks become plastic at depth , and the pressure caused by the weight of the overlaying crustabout 52,800 pounds per square inch at a ...
Brittle at the surface , rocks become plastic at depth , and the pressure caused by the weight of the overlaying crustabout 52,800 pounds per square inch at a ...
Page 31
As long as surface winds feeding the updraft flow freely , no funnel develops . But if those winds are cut off by a cold downdraft , for examplethe surrounding mass of spinning air contracts and gains speed , producing a tornado ...
As long as surface winds feeding the updraft flow freely , no funnel develops . But if those winds are cut off by a cold downdraft , for examplethe surrounding mass of spinning air contracts and gains speed , producing a tornado ...
Page 12
Carcinogenesis , Mutagenesis , Impairment of Fertility In two 24 - month carcinogenicity studies , Sprague - Dawley rats were treated orally with doses of 5 to 150 mg / kg / day , about 1 to 40 times the exposure on a body surface ( mg ...
Carcinogenesis , Mutagenesis , Impairment of Fertility In two 24 - month carcinogenicity studies , Sprague - Dawley rats were treated orally with doses of 5 to 150 mg / kg / day , about 1 to 40 times the exposure on a body surface ( mg ...
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Contents
118 | 4 |
Chasing Tornadoes Stalking the funnel clouds that | 5 |
BY JENNIFER ACKERMAN | 39 |
Copyright | |
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