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).
When does fall start in Alabama? Officially, the first day of fall is the Autumnal Equinox on September 23. However, the end of summer is considered to be the day after Labor Day, which is the last summer hâ¦oliday. Autumn leaves in the deep south usually begin in late October to early November. 4 people found this useful.