Actually, Alaska has a lot of tundra in the northern part of the state but this is a distinct biome and not a true desert. Antarctica is a true desert however. People do live in the Arctic Tundra, however.
The Arctic is primarily sea ice, open sea or tundra and not classified as a true desert. However, people do live in the Arctic.
The Arctic
Humans can be found in all the biomes (Arctic Tundra, Coniferous Forest, Deciduous Forest, Desert, Grasslands, Mountains, Rainforests).
Artic foxes are adapted to life in the cold such as in the artic. They are not evolved to live in the desert.
Polar bears do not live in the desert. They live in the Arctic.
There are foxes that live in both habitats. The arctic fox is an example of a desert fox since the arctic qualifies as a desert habitat.
Yup....they do
Humans, according to the links below.
Yes, many live in the Gobi
desert scrub is one of them and that is all i know because i live their
An ecosystem is a place where plants and animals ( maybe humans ) live and animals and plants live in the desert so … 
There are several.cariboupolar beararctic foxwolf/wolverinemusk oxwhalesbirdsharp sealswalruserminelemmingarctic harearctic ground squirrel