Tundra is found in the far northern regions of the world, specifically:

Arctic Tundra:

* North America: Northern Canada, Alaska (United States), Greenland

* Europe: Northern Scandinavia (Norway, Sweden, Finland), Russia (Siberia)

* Asia: Northern Russia (Siberia), parts of Mongolia and China

Alpine Tundra:

* Found at high altitudes in mountains around the world, typically above the treeline.

Here are some key features of the tundra biomes:

* Cold and dry climate: Low temperatures, short growing seasons, and limited rainfall.

* Permafrost: A layer of permanently frozen soil that prevents deep-rooted plants from growing.

* Low-lying vegetation: Mosses, lichens, grasses, and dwarf shrubs.

* Limited biodiversity: Fewer species of plants and animals compared to other biomes.

I hope this helps!