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.
Approximately 1,700 species of plants live on the Arctic tundra, including flowering plants, dwarf shrubs, herbs, grasses, mosses, and lichens.The tundra is characterized by permafrost, a layer of soil and partially decomposed organic matter that is frozen year-round.hen we think of the word âplantsâ we typically picture trees, bushes, grasses, and ferns â so-called âvascular plantsâ because of their full systems of leaves, stems, and roots. However, the plant kingdom also includes mosses, liverworts, and hornworts, simpler plants that lack these water-transporting structures.