The answer is A. Isthmus.
The correct answer would be option A, expands; contracts.
Arctic sea ice naturally expands during the dark, cold winters and contracts during the spring and summer.
Explanation:
There are five big oceans in the world. Arctic ocean is one of these oceans. Arctic Ocean is the shallowest and smallest of all five oceans.
Some oceanographers call the Arctic Ocean as Arctic Sea, where as International Hydrographic Organization recognizes the Arctic Ocean as an Ocean.
Arctic ocean Ice expands during the dark and cold winters. It becomes more solid, but in summers and spring, the Arctic Oceans ice or Arctic Sea ice contracts. This is a natural phenomenon which takes place at arctic ocean as well.
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D increasing migration to the United States
For: Clay believed it would help foster economic growth along with stability. This would also fund the roads and canals, federally.
Against: Jackson believed that it was unconstitutional to do so. He did not believe it was possible to find so much and grow.
