The study of water in the environment, particularly its amount, movement and quality. It encompasses water in rivers, lakes, glaciers, soil and underground aquifers. The way in which water (liquid and frozen) behaves in the ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic as areas having a high latitude, long winters, short, cool summers,... More greatly influences Arctic life, the physical environment and regional and global climates.

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