These then react with the ozone molecules, resulting in their removal. CFCs have a lifetime in the atmosphere of about 20 to 100 years, and consequently one free chlorine atom from a CFC molecule can do a lot of damage, destroying ozone molecules for a long time.
exists and is an alternate of . In the northern hemisphere of Earth, Fall begins on the Autumnal equinox (22-23 September) (in Persian calender it will begin at the first day of Mehr) and ends on the Winter solstice (21-22 December). In the southern hemisphere of Earth, Fall begins on the Autumnal equinox (20-21 March) and ends on the Winter solstice (20-21 June).
Home > Holiday and Occasions > Fall - Autumn > When is the first day of Fall - Autumn 2016? In 2016, fall begins on September 22rd (at 14:22 UTC) for countries in the Northern Hemisphere (United States, Canada). Fall - Autumn Activities and Games. In 2015, fall begins on March 20th (22:45 UTC) for countries in the Southern Hemisphere (parts of South America, parts of Africa, Australia, and Antarctica).