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ARCTIC OCEAN
3
CANADA
3
DENMARK
GREENLAND
3
*ARCTIC REGIONS
2
ALASKA
2
CONGRESS
2
CONTINENTAL SHELVES
2
GASES
2
GLOBAL
2
Ice and Permafrost
2
MELTING
2
MERCHANT VESSELS
2
MINERALS
2
NATIONAL SECURITY
2
NORWAY
2
POLLUTION
2
RISK
2
RUSSIA
2
SHORES
2
Snow
2
TEMPERATURE
2
UNITED STATES
2
WATER
2
(*AERIAL RECONNAISSANCE
1
(*SEA ICE
1
*CLIMATE
1
*INDIGENOUS POPULATION
1
*OCEAN ENVIRONMENTS
1
*PERMAFROST
1
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