Arctic
The 'Arctic' is the area around the Earth's North Pole. The Arctic includes parts of Russia, Alaska, Canada, Greenland, Lapland and Svalbard as well as the Arctic Ocean. It is an ocean, but it is always frozen, so it is solid ice. Most scientists call the area north of the treeline Arctic. Trees will not grow when the temperatures get too cold. The forests of the continents stop when they get too far north or too high up a mountain. The place where in the trees stop is called the treeline.