The alpine tundra biome is also a cold climate region ... polar bears, white foxes, lemmings, Arctic hares, wolverines, caribou, migrating birds, mosquitoes, and black flies.

Terrestrial biomes are distinguished primarily by their predominant vegetation, and are mainly determined by temperature and rainfall ... gray or white leaves. However, in warm deserts ...

This article appeared in the Science & technology section of the print edition under the headline “Climate change in black and white” ...

Biomes are the world's major habitats. These habitats are identified by the vegetation and animals that populate them. The regional climate determines each biome's location. Grassland biomes have ...