Air conditioning eventually reach the upper atmosphere. Once the refrigerant reaches the stratosphere, UV radiation from the Sun homolytically cleaves the chlorine-carbon bond, yielding a chlorine radical. These chlorine radicals catalyze the breakdown of ozone into diatomic oxygen, depleting the ozone layer that shields the Earth's surface from strong UV radiation. Each chlorine radical remains active as a catalyst until it binds with another radical, forming a stable molecule and quenching the chain reaction. Prior to 1994, most automotive air conditioning systems used R-12 as a refrigerant. It was replaced with R-134a refrigerant, which has no ozone depletion potential. Old R-12 systems
Triangle of the Sun Triangle of the Sun The Triangle of the Sun is a tourist area in the state of Guerrero that runs through the Sierra Madre del Sur of that state. This tourist area is formed by the cities of Acapulco in the south, the pair of Ixtapa-Zihuatanejo in the north, and Taxco in the center of the state. These cities are those that receive more tourists in Guerrero. Acapulco is the largest port city and populous state of Guerrero and the most visited by tourists and internacionales. This destination got its fame from the 50's and 70's also becoming a favorite