The Russian Federation stretches across a large extent of the north of the super-continent of Eurasia. Because of its size, Russia displays both monotony and diversity. As with its topography, its climates, vegetation, and soils span vast distances. From north to south the East European Plain is clad sequentially in tundra, coniferous forest (taiga), mixed and broad-leaf forests, grassland (steppe), and semi-desert (fringing the Caspian Sea) as the changes in vegetation reflect the changes in climate. Siberia supports a similar sequence but is taiga. The country contains 23 World Heritage Sites[17] and 40 UNESCO Biosphere reserves.
