Region
Adelaide (S.A.)
2
Afghanistan
2
Africa
4
Africa, East
1
Africa, North
1
Africa, Sub-Saharan
3
Africa, West
4
Afrika
1
Alaska
6
America
2
Appalachian Region
2
Appalachian Region, Southern
1
Appalachian region
1
Arab countries
4
Arctic National Wildlife Refuge
1
Arctic National Wildlife Refuge (Alaska)
1
Arizona
1
Arkansas
1
Asia
22
Asia, Central
15
Australia
9
Azerbaijan
5
Balkan Peninsula
1
Baltic Sea
9
Baltic Sea Region
1
Baltic States
1
Belarus
6
Brazil
7
Cabo Verde
1
California
22
Cameroon
1
Canada
22
Caribbean Area
3
Caspian Sea Region
6
Catalonia
1
Catalonia (Spain)
1
Caucasus
1
China
73
Colombia
5
Colorado
2
Congresses
1
Connecticut
2
Cuba
2
Czech Republic
6
Darfur
1
Denmark
2
Developed countries
1
Developing countries
25
Earth (Planet)
1
East (U.S.)
1
more ...