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.
Home > Ancient Maya Inca Aztec Cities/Ruins > Machu Picchu, Peru. Machu Picchu is the best known archaeological site in the western hemisphere. These white granite Incan ruins lie perched on an Andean mountain top, 2,000 feet above the Urabamba River gorge. Picchu is what the Incas called the geographic area where the ruins are found.