Region
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Florida
6
France
6
Latin America
6
Philippines
6
Québec (Province)
6
Alberta
5
Austria
5
Colorado River Watershed (Colo.-Mexico)
5
Developed countries
5
East Asia
5
Iceland
5
Kiribati
5
Mediterranean Region
5
Mexico, Gulf of
5
Netherlands
5
New England
5
Pacific Ocean
5
Peru
5
Puerto Rico
5
South Asia
5
Texas
5
Virginia
5
Zimbabwe
5
Arctic Ocean
4
Great Barrier Reef (Qld.)
4
Hindu Kush-Himalayan Region
4
Indonesia
4
Japan
4
Maine
4
Middle West
4
New York (State)
4
Northwest, Pacific
4
Sierra Nevada (Calif. and Nev.)
4
Southern Hemisphere
4
Southwest, New
4
Wyoming
4
Africa, Sub-Saharan
3
Alps Region
3
Antarctic Ocean
3
Canada, Northern
3
Denmark
3
Ecuador
3
Great Lakes (North America)
3
Great Plains
3
Gulf Coast (U.S.)
3
Hawaii
3
Idaho
3
Iowa
3
Ireland
3
Islands of the Indian Ocean
3
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