On the mountains, in the valleys, on the foothills and on the deserts of the Intermountain West grow millions of tons of vegetation. The chemical energy stored bv these plants is a potential source of useful energy for man. Some of the plant material has been used for fuel, other has been used as a source of lumber, chemicals, and paper, but the major part of this vast reservO\u27ir is useful to man because it is utilized by livestock. This native vegetation is grazed by livestock and they convert the plant energy to\u27 high quality, desirable food energy for man
