Rocky Mountains or Rockies1
Rocky Mountains or Rockies, great chain of rugged mountain ranges in western North America, extending from central New Mexico to northeastern British Columbia, a distance of about 3220 km (about 2000 mi). The Rockies are bordered on the east by the Great Plains and on the west by the Great Basin and the Rocky Mountain Trench, a valley running from northwestern Montana to northern British Columbia. The Rocky Mountains form part of the Great, or Continental, Divide, which separates rivers draining into the Atlantic or Arctic oceans from those flowing toward the Pacific Ocean. The Arkansas, Colorado, Columbia, Missouri, Rio Grande, Saskatchewan, and Snake rivers rise in the Rockies.The Rockies may be divided into four principal sections-Southern, Central, Northern, and Canadian. The Southern Rockies, which include the system's broadest and highest regions, extend from central New Mexico, through Colorado, to the Great Divide, or Wyoming, Basin, in southern Wyoming. This section, which encompasses Rocky Mountain National Park, is composed chiefly of two northern-southern belts of mountain ranges with several basins, or parks, between the belts. The component parts include the Sangre de Cristo and Laramie mountains and the Front R
The highest peak is Grand Teton (4197 m/13,771 ft), located in Grand Teton National Park. Sagebrush, common name applied to any of several related aromatic, bitter shrubs, native to the plains and mountains of western North America, but especially to the Great Basin, the extensive desert region west of the Rocky Mountains in the United States. The success of this project is not yet clear. The scarlet paintbrush is a common wild plant of the eastern United States. The river system is widely used for irrigation, however, and it has several hydroelectric facilities, notably Gardiner Dam on the South Saskatchewan River, near Saskatoon, and Grand Rapids Dam, at the mouth of the Saskatchewan River. Rocky Mountain goats are herbivorous ruminants, feeding on any exposed vegetation they find. The Athabasca River, 1231 km (765 mi) long, begins in Jasper National Park in southwestern Alberta. They are fairly abundant only in Alaska and Canada; smaller numbers exist in the Pacific Northwest and upper Midwest, primarily in Minnesota. Rugged and forested, with an average elevation of 2740 m (about 9000 ft), it remains one of the most inaccessible areas in the United States. Missouri (river) (Illinois Emissourita,"dwellers of the big muddy"), river in central United States. Scientific classification: Indian paintbrushes make up the genus Castilleja, of the family Scrophulariaceae. Wolves are valuable predators in the food web, and their decimation has led to the overpopulation of certain other animal species in various areas. Most of the divide follows the crest of the Rocky Mountains. Adult wolves sometimes feed young pups by regurgitating partly digested food for them. The den, or lair, of a wolf may be a cave, a hollow tree trunk, a thicket, or a hole in the ground dug by the wolf.
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