Answer:
Iron and nickel are heavy materials but the reason they stay solid in the Earth's core where temperatures can reach 5,427 C is because of the very intense pressure in the core to the point that all the metals are extremely cramped up together that prevents them from melting
Explanation:
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:
Oceanic plates subduct beneath continental plates because they are more dense. a)
The Five Themes Of Geography Are; Location, Place, Human-Environment Interaction, Movement And Region
