The zone of seasonally frozen ground that exists between the subsurface permafrost layer and the ground surface is called the
A) gelifluction.
B) discontinuous region.
C) active layer.
D) talik.

Question

Quizplus · Accepted Answer

The zone of seasonally frozen ground is called the active layer. This layer thaws and refreezes each year, while beneath it is the permanently frozen permafrost layer. Choices A, B, and D are not correct, as gelifluction refers to the slow downhill movement of soil due to freeze-thaw cycles, the discontinuous region refers to a geographic area with sporadic permafrost, and a talik is a layer of unfrozen ground that exists beneath lakes or rivers in permafrost regions.

The Zone of Seasonally Frozen Ground That Exists Between the Subsurface