The tundra and subarctic zones in Russia and the Near Abroad are permanently frozen to a depth of three meters. What is this permanently frozen layer called?
a. spodosol
b. podzols
c. permafrost
d. mollisol
e. chernozem
c
Environmental & Atmospheric Sciences
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A) 1 B) 2 C) 3 D) 4
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The biome characterized by rapid nutrient cycling, high productivity, and very little organic matter in the soil is the ________
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