The Rocky Mountains stretch over 3,000 miles from New Mexico to where?
Rocky Mountains Rocky Mountains The Rocky Mountains, also known as the Rockies, are a major mountain range in western North America. The Rocky Mountains stretch more than from the northernmost part of British Columbia, in western Canada, to New Mexico, in the Southwestern United States. Located within the North American Cordillera, the Rockies are somewhat distinct from the Pacific Coast Ranges, Cascade Range, and the Sierra Nevada, which all lie farther to the west. The Rocky Mountains formed 80 million to 55 million years ago during the Laramide orogeny, in which a number of plates began sliding underneath the North American plate.
Ecology of the Rocky Mountains the Rocky Mountains mirror these global trends. Western toads, once common between altitudes of throughout the central and northern Rocky Mountains, now occupy less than 20% of their previous range, from southern Wyoming to northern New Mexico. Eleven populations of western toads disappeared from the West Elk Mountains of Colorado between 1974 and 1982 because of a bacterial infection and, perhaps, multiple sublethal environmental causes. The number of breeding sites in Rocky Mountain National Park has declined to only 3. In the past two decades, western toads disappeared from 83% of their historical range in Colorado and from 94% of