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ICE
2
PERMAFROST
2
TRANSLATIONS
TUNDRA
2
USSR
2
(*EROSION
1
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1
*GEOGRAPHY
1
AGRICULTURE
1
ALLUVIAL PLAINS
1
ARCTIC OCEAN
1
ARCTIC REGIONS
1
ATLANTIC OCEAN
1
CLIMATE
1
DAMAGE
1
DESERTS
1
FOREST FIRES
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FREEZING
1
GLACIERS
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GRASSES
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Geochemistry and Mineralogy
1
Geography
1
Geology
1
HUMIDITY
1
INLAND WATERWAYS
1
MELTING
1
MOUNTAINS
1
OROGRAPHY
1
PACIFIC OCEAN
1
PROTECTION
1
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