'Also called pergelisol, it's the perennially frozen subsoil of Arctic & subarctic regions'
Permafrost
GEOGRAPHER'S DICTIONARY: Also called pergelisol, its the perennially frozen subsoil of Arctic & subarctic regions
Also called pergelisol, it's the perennially frozen subsoil of Arctic & subarctic regions
Also called pergelisol, it's the perennially frozen subsoil of Arctic & subarctic regions
GEOGRAPHER'S DICTIONARY
Permafrost
GEOGRAPHER'S DICTIONARY