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.
Mostly fractures than cleavage
The earth is tilted because of the magnetic fields correlation with the sun
Su geografía física es en gran parte montañosa. Posee suaves playas en su litoral del Pacífico y planicies bajas al norte del país. Es atravesada en su parte central por la cordillera de los Cuchumatanes y parte de la sierra Madre del Sur.
It created jobs for the US and increased employment and incomes as well and also lowered prices
