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biome glacier iceberg Artic Antarctic polar tundra desert monsoon globe map longitude latitude continent ocean Equator North Pole South Pole Northern Hemisphere Southern Hemisphere county Earth solar system universe Tropic of Cancer Tropic of Capricorn Arctic Circle Antarctic Circle Earth's rotation axis compass point N, NE, E, SE, S, SW, W, NW, Mediterranean cliff location resort physical features human特色定居旅游区半岛礁侵蚀沉积潮汐风暴贸易
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