/ Math & Science / Environment, Energy, and Nature / Nature Cite Nature Encyclopedia: Nature Major Biomes of the World Water Supply of the World National Park System Ten Most Visited National Parks, 2012 Endangered and Threatened Species See also: Animals World Geography Polar Regions Icebergs Oceans and Seas Lakes World Rivers U.S. Rivers Islands Mountains Waterfalls Deserts Caves Energy Production & Consumption Sources + Our Common Sources ✖
Encyclopedia: Nature Major Biomes of the World Water Supply of the World National Park System Ten Most Visited National Parks, 2012 Endangered and Threatened Species See also: Animals World Geography Polar Regions Icebergs Oceans and Seas Lakes World Rivers U.S. Rivers Islands Mountains Waterfalls Deserts Caves Energy Production & Consumption Sources + Our Common Sources
