The Encyclopedia Americana, Volume 7Grolier, 1994 - Encyclopedias and dictionaries |
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Page 73
Another cause is the difference in cloudi- ness at low and high latitudes . Tropical clouds are usually scattered or broken . The clear spaces allow sunshine to raise the daytime temperature and permit the earth's radiation to escape ...
Another cause is the difference in cloudi- ness at low and high latitudes . Tropical clouds are usually scattered or broken . The clear spaces allow sunshine to raise the daytime temperature and permit the earth's radiation to escape ...
Page 81
Other causes probably played their roles in the periods and smaller stages of the great ice ages . ... Variations in atmospheric circula- tion that would cause cooler summers and a heavier snowfall in winter would also favor gla- ...
Other causes probably played their roles in the periods and smaller stages of the great ice ages . ... Variations in atmospheric circula- tion that would cause cooler summers and a heavier snowfall in winter would also favor gla- ...
Page 512
The forces that cause concrete to deteriorate include freezing and thawing of water - saturated concrete , expansion caused by the reaction between reactive aggregates and alkalis in cement , reactions between soil and water sulfates ...
The forces that cause concrete to deteriorate include freezing and thawing of water - saturated concrete , expansion caused by the reaction between reactive aggregates and alkalis in cement , reactions between soil and water sulfates ...
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