Matching Pairs Russia and Central Asia VocabularyOnline version Russia and Central Asia Vocabulary by Raymond Smith 1 Irrigate 2 Ural Mountains 3 Tundra 4 Permafrost 5 Chernozem Ground that is permanently frozen Rich, black soil found in the Northern European Plain, especially Russia and Ukraine The process of collecting water and using it to water crops The boundary between Europe and Asia A vast treeless plain in the artic regions between the ice cap and the tree line