Answer: D. It can melt to a depth of a few meters in summer, then refreeze in winter.
Explanation:
Permafrost is ground which remains frozen for two or more years. Permafrost consists of soil, rock and sand fused together by ice. Mostly found in areas in high altitude, the Arctic, Antarctica, it is common in periglacial environments where temperatures are below freezing
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The topmost layer of permafrost can melt in summer and refreeze in winter. This thawing and refreezing produces a ground pattern called columnar joints similar to the one formed when molten lava cools.
Answer:
The answer is c, thanks commenters!
Explanation:
The third one the second one and the first one
Answer:
eventually there wouldn't be enough for the bottom of the chain then they would die and then the middle of the chain would eventually die and then the top will die
Explanation:
Answer:
Explanation:
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