1. What do the fossils of large animals reveal about the ancient history of some areas near the Arctic that are now underlain with permafrost?
  2. What is the forecasted relationship between global temperature rise and emissions?
  3. How does a deep layer of snow contribute to the warming?
  4. Explain why the problem intensifies when the active layer stops freezing.
  5. What is a thaw slump?
  6. Explain how depressions develop on the surface in permafrost landscapes.
  7. Why is the release of methane even more concerning than the release of carbon dioxide?
  8. Why did the soil in Alaska become wetter after large grazing animals no longer inhabited the area?


Permafrost Questions