North-South: Dakota through Kansas and Oklahoma to Texas The region between the Rockies and the Appalachians is where warm, moist air from the Gulf of Mexico meets cold, dry air from the Rocky Mountains and Canada, and produces the strongest and most frequent tornadoes.
Which of these is a natural area of roughly 16 square km (6.2 squ miles), which is 5 km (3.1 miles) west of Tuktoyaktuk, Canada, in a coastal region of the Arctic Ocean, which contains approximately 1,350 Arctic ice dome hills?
Where is the area seen as one of the most outstanding volcanic regions in the world, with a high density of active volcanoes, a variety of types, and a wide range of related features?
