* Rocky Mountains
* Great Plains
* Boreal forests of Canada and Alaska
* Deserts of the southwestern United States
* Arctic tundra
Europe
* Boreal forests of Scandinavia
* Central Europe
* Eastern Europe
* Iberian Peninsula
* Italian Peninsula
Asia
* Siberian tundra
* Taiga forests of Russia
* Steppes of Central Asia
* Mountains of Central Asia
* Deserts of the Middle East
Africa
* Deserts of North Africa
* Savannas of East Africa
* Southern Africa
South America
* Andes Mountains
* Pampas grasslands
* Patagonian steppe