Question

tundras have a layer of frozen soil under the surface called _______.
choose one option
a glacier element
b marshland
c permafrost
d coldpack

Explanation:

To solve this, we recall tundra biome characteristics. Tundras have permafrost (permanently frozen soil) below the surface. Option A (glacier element) is incorrect as glaciers are ice masses, not soil layers. Option B (marshland) refers to wetland, not frozen soil. Option D (coldpack) is not a term for tundra soil. So the correct term is permafrost.

Answer:

C. permafrost