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
.
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:
Yes.
Explanation:
In this region we see that faulting has occurred. Because the rock strata are not lined up with one another across the entire region, it is clear that the land has faulted and the the two edge blocks have slipped downwards leaving the middle block uplifted or that the middle block has been pushed upwards.
These two types of faulting are called normal faulting and reverse faulting. They are the result of tension and compression stresses, respectively, that pull and compress the rocks creating fractures called faults. If the stress is sufficient, the outer blocks slide downward or the middle block is uplifted.
Answer:
Gene mutation
Explanation:
The difference in the coloration of the whale is due to mutation. Mutation is an alteration of the gene of an organism which can result in a change in phenotypic qualities. Mutation can be caused by exposure to mutagens such as industrial chemicals.
Answer:
looks like iceland
Explanation:
the momumant in the background is a church
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