Examlex
The majority of T cells of the naive lymphocyte pool wait for the encounter with foreign antigens in the __________.
Earth's Climate
The average weather conditions, including temperature, precipitation, and wind, in a region over long periods of time.
Permafrost
Permanently frozen ground that occurs in high latitude or altitude regions.
Polar Grasslands
A cold, treeless region found in the high latitudes, often referred to as tundra, where the subsoil is permanently frozen and vegetation is sparse.
Arctic Tundra
A cold, treeless biome found in the Arctic regions, characterized by permafrost, low temperatures, and minimal vegetation.