Iodine is a chemical element with symbol I and atomic number 53. The heaviest of the stable halogens, it exists as a lustrous, purple-black metallic solid at a standard conditions that sublimes readily to form a violet gas. The elemental form was discovered by the French chemist Bernard Courtois in 1811.
Definition of CHOLLA. : any of numerous shrubby opuntias chiefly of the southwestern United States and Mexico that have needlelike spines partly enclosed in a papery sheath and cylindrical joints âcalled also cholla cactus.
Cactus is a naturally-occurring plant that grows only on sand that is not connected to water. Cacti do not need light to grow and are non-flammable. Cacti inflict half a heart of damage when touched, so use caution when harvesting. The damaging property of a cactus can be used to create simple traps.