The top of permafrost is sometimes called ________.
A) groundwater
B) the active layer
C) the frozen layer
D) the calcite layer
E) artesian water

Question

Quizplus · Accepted Answer

The top layer of permafrost is referred to as the "active layer" because it experiences seasonal thawing and freezing. This layer can range from a few centimeters to several meters in depth and is important for plant and animal life in the Arctic.

The Top of Permafrost Is Sometimes Called ________