What Is the Chief Mass Wasting Concern Associated with Permafrost

question 4

Multiple Choice

What is the chief mass wasting concern associated with permafrost?

• A) Manmade structures tip, sag, and slide when the permafrost melts because of insulation or heating associated with the structures.
• B) Frozen soils fail and slide like fractured bedrock.
• C) Debris flows of ice and soils occur frequently.
• D) Ice in the frozen soils is low density and low strength, failing by fracture under any applied load.

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