1 2 3 4 1 _ _ _ _ 2 _ _ _ _ 3 _ _ _ _ 4 _ _ _ _ ACROSS 1) the option to sell a given stock (or stock index or commodity future) at a given price before a given date 2) a heavy ductile magnetic metallic element; is silver-white in pure form but readily rusts; used in construction and tools and armament; plays a role in the transport of oxygen by the blood 3) a republic in western south america; achieved independence from spain in 1821; was the heart of the inca empire from the 12th to 16th centuries 4) north american woodland herb similar to and used as substitute for the chinese ginseng DOWN 1) a disease of poultry 2) the chief solid component of mammalian urine; synthesized from ammonia and carbon dioxide and used as fertilizer and in animal feed and in plastics 3) separate or cause to separate abruptly 4) a small secluded room ** Scroll down for solution. ** Are you sure you want to peek? puts iron peru sang