Meltdown.Beware of thin ice! Scientists have learned that many lakes in North America North America, third largest continent (1990 est. pop. 365,000,000), c.9,400,000 sq mi (24,346,000 sq km), the northern of the two continents of the Western Hemisphere. are thawing earlier each spring. Barbara Benson, a limnologist lim·nol·o·gy n. The scientific study of the life and phenomena of fresh water, especially lakes and ponds. [Greek limn who studies inland waters Canals, lakes, rivers, water courses, inlets, and bays that are nearest to the shores of a nation and subject to its complete sovereignty. Inland waters, also known as internal waters, are subject to the total sovereignty of the country as much as if they were an actual part at the University of Wisconsin-Madison “University of Wisconsin” redirects here. For other uses, see University of Wisconsin (disambiguation). A public, land-grant institution, UW-Madison offers a wide spectrum of liberal arts studies, professional programs, and student activities. , and colleagues tracked the timing of thawing for 61 lakes in the Great Lakes region The Great Lakes region can refer to:
Benson says the likely culprit is global warming, or the average increase in Earth's temperature. "On some lakes it is getting to the point where they don't get ice on them at all in some winters," says Benson. ICE BREAK UP ON LAKE MENDOTA, WISCONSIN Each year, scientists record the date on which lakes thaw, counting the number of days after January 1 that the thaw occured. Look at the graph, below. Would you find the same trend as Benson if you only studied lake ice between 1995 and 2004? Explain. |
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