The Metro Lines run: 1  Red: serves the northern part of the city. Main stations are: Union Station, Metro Center, Chinatown and Dupont Circle. 2  Blue: runs west-east through the city and then south. Main stations are: Capitol South, Smithsonian, McPhearson Square (White House), Arlington National Cemetery, National Airport.
Climate In the arctic tundra there are two seasons: winter and summer. In the summer, the sun is present almost 24 hours a day. This sun however, only warms the tundra up to a range of about 3Â°C to 12Â°C.In the winter the opposite light conditions are present.There are several weeks where the sun never rises.limate In the arctic tundra there are two seasons: winter and summer. In the summer, the sun is present almost 24 hours a day. This sun however, only warms the tundra up to a range of about 3Â°C to 12Â°C. In the winter the opposite light conditions are present. There are several weeks where the sun never rises.
Tundra means marshy plain. The geographical distribution of the tundra biome is largely poleward of 60Â° North latitude. The tundra biome is characterized by an absence of trees, the presence of dwarf plants, and a ground surface that is wet, spongy, and hummocky.lant communities are usually composed of a few species of dwarf shrubs, a few grass species, sedges, and mosses. Perhaps the most characteristic arctic tundra plants are lichens like Reindeer Moss (. spp.). The principal herbivores in this biome include caribou, musk ox, arctic hare, voles, and lemmings.