Official 49 Lec 1
Question 2 of 6
The professor explains thaw lake formation as a cycle of events that occur repeatedly. Summarize this cycle, starting with the event filled in below. Click on a sentence. Then drag it to the space where it belongs. The first one is done for you. One sentence will not be used. Permafrost shrinks and cracks as temperatures drop.

A.

Permafrost shrinks and cracks as temperatures drop

B.

Ice in the active layer melts as temperatures rise

C.

Meltwater flows into cracks in permafrost

D.

Freezing water expands cracks in permafrost

E.

Ice wedges inside permafrost completely melt

正确答案:ABCDE

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