Region
China
7
United States
6
Arctic regions
5
Developing countries
5
Great Britain
4
India
3
Brazil
2
East End (London, England)
2
England
2
Europe
2
Japan
2
London
2
Polar regions
2
Southeast Asia
2
Africa
1
Alaska
1
Amazon River Estuary
1
Amazon River Estuary (Brazil)
1
Antarctica
1
Aral Sea Region (Uzbekistan and Kazakhstan)
1
Arid regions
1
Australia
1
California
1
Chornobyl'
1
Chornobyl' (Ukraine)
1
Crater Lake
1
Crater Lake (Or.)
1
El Niño Current
1
European Union countries
1
Everglades
1
Everglades (Fla.)
1
Florida
1
Germany
1
Glasgow
1
Glasgow (Scotland)
1
Great Lakes (Africa)
1
Great Lakes (North America)
1
Great Lakes Region (Africa)
1
Great Lakes Region (North America)
1
Henan Sheng
1
Henan Sheng (China)
1
Hong Kong
1
Islands of the Mediterranean
1
Los Angeles River (Calif.)
1
Louisiana
1
Mekong River Watershed
1
Mexico
1
New Orleans Metropolitan Area
1
New Orleans Metropolitan Area (La.)
1
Ontario
1
more ...