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:
c. abiotic factors that are not involved in maintaining a population near its equilibrium.
Explanation:
They are both natural disaster and they are not dependent on the population.
<span>Characteristics of "place" include things like economic activity, architecture, and culture, all of which are human elements that alter or can be influenced by the environment.
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Answer:
First question: The United Nations issued a hybrid United Nations-African Union mission (UNAMID) to maintain peace in Darfur. It was established on 31 July 2007 with the adoption of Security Council resolution 1769. However, it formally took over on 31 December 2007.
Second question: As said above, international countries attempted to mediate peace in Darfur and helped. There is still conflict in the Darfur region but it is much lower than before and has grown much more stable.
Explanation:
Had been explained above.
<span>A floodplain or flood plain is an area of land adjacent to a stream or river that stretches from the banks of its channel to the base of the enclosing valley walls </span>
delta IDK
relating to or derived from alluv
<span>An oxbow lake is a U-shaped body of water that forms when a wide meander from the main stem of a river is cut off</span>ium
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