An obligate parasite, or holoparasite, is a parasitic organism that cannot complete its life-cycle without exploiting a suitable host.
Part of the Andes mountain range, Aconcagua is the second highest of the Seven Summits, behind only Mount Everest in Asia. At 22,837 feet (6,961 meters), not only is it the highest mountain in South America, it is the tallest peak in all of the Americas as well as the Southern and Western Hemispheres.
The Alps are the highest mountain range in Western Europe. Their highest peak, Mont Blanc, is also the highest point in Western Europe. It is 15,781 ft. or 4810 m high. The Alps maintain a permanent snow blanket over 9,000 ft. above sea level, and have many glaciers.