It is known as the permafrost.
Permafrost
The region is called the Arctic Tundra. The permanently frozen soil is called permafrost.
permafrost
Taiga
(tundra) Arctic tundra
The frozen part of water is called 'ice'
The region is called the Arctic Tundra. The permanently frozen soil is called permafrost.
Permanently frozen soil anywhere is called permafrost.
tundra
Permafrost.
permanently frozen soil
what is a vast flat treeless region in which the subsoil is permanently frozen is called
permafrost
the water here is usually fresh but can be salty from oceans
A permanently frozen layer of earth. It never thaws out.
permafrost
Taiga
About 25% is permanently frozen.