alpine alpine desert alpine mountain arctic arctic alpine tundra arctic desert arctic forest arctic grassland arctic mountain arctic ocean arctic tundra arid desert boreal boreal desert boreal forest boreal jungle boreal mountain boreal ocean boreal savanna boreal steppe boreal swamp coastal desert cold desert desert desert mountain forest grassland hot desert jungle mountain mountain desert ocean ocean desert polar polar alpine tundra polar desert polar forest polar grassland polar ice cap polar mountain polar ocean polar tundra rainforest savanna semi-arid desert steppe subtropical desert swamp temperate temperate alpine tundra temperate coniferous forest temperate deciduous forest temperate desert temperate forest temperate grassland temperate jungle temperate mixed forest temperate mountain temperate ocean temperate rainforest temperate savanna temperate steppe temperate swamp tropical tropical desert tropical dry forest tropical forest tropical grassland tropical jungle tropical moist forest tropical mountain tropical ocean tropical rain forest tropical rainforest tropical savanna tropical seasonal forest tropical steppe tropical swamp tundra volcanic