Ummmm????? what does this question mean????
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.
The country that revealed the arctic military base of Franz Josef Archipelago was Russia. The place would be used as a nuclear-ready place that could contain warplanes and hundreds of troops. It was built to extract oil reserves that worths 23 trillion pounds
