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*ARCTIC REGIONS
*SEA ICE
3
CLIMATE
3
CONTINENTAL SHELVES
Ice and Permafrost
Snow
3
ARCTIC OCEAN
2
SEASONS
2
STRATEGY
2
WEATHER
2
*OCEAN ENVIRONMENTS
1
*PERMAFROST
1
ALASKA
1
CANADA
1
COASTAL REGIONS
1
CONGRESS
1
DENMARK
1
GASES
1
GLOBAL
1
GREENLAND
1
HEATING
1
INTERNATIONAL
1
MELTING
1
MERCHANT VESSELS
1
MINERALS
1
NATIONAL SECURITY
1
NORWAY
1
OIL SPILLS
1
POLLUTION
1
RISK
1
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