Region
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Pennsylvania
6
Peru
6
Sonoran Desert
6
South Dakota
6
South Pacific Ocean
6
Southeast Asia
6
Turkey
6
Wisconsin
6
Yellowstone National Park
6
États-Unis
6
Amazon River
5
Appalachian Region
5
Atlantic Coast
5
Austria
5
Borneo
5
Botswana
5
British Columbia
5
Californie
5
Central America
5
Costa Rica
5
European Union countries
5
Gulf States
5
Illinois
5
Japon
5
Kings Canyon National Park (Calif.)
5
Louisiana
5
Maine
5
Michigan
5
North Atlantic Ocean
5
North Carolina
5
Oregon
5
Paignton
5
Rocky Mountains
5
Sequoia National Park (Calif.)
5
Utah
5
Washington (D.C.)
5
West Indies
5
Afghanistan
4
Africa, East
4
Africa, North
4
Alberta
4
Argentina
4
Arkansas
4
Caribbean Sea
4
Chengjiang (Yunnan Sheng)
4
Ecuador
4
Eurasia
4
Gabon
4
Georgia
4
Guatemala
4
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