Alaska Antarctic Zone Antarctica Arctic Circle Arctic Zone Greenland Iceland Lower Slobbovia North Pole Novaya Zemlya Siberia South Pole Tierra del Fuego Torrid Zone Tropic of Cancer Tropic of Capricorn Variable Zones climate clime equator horse latitudes latitude longitude longitude in arc meridian parallel prime meridian roaring forties subtropics the Antarctic the Arctic the Hebrides the Yukon the line tropic tropics tundra zone