What is atmosphere? Draw a neat figure showing the various layer of atmosphere.
The thick layer of air that surrounds the earth'scrust is called atmosphere.
How is ozone formed in stratosphere?
Ozone formation is a natural process, which is formed by the combination of 3 oxygen atoms due to the influence of ultraviolet radiations. When an oxygen molecules absorbs high energy solar radiation it dissociates into nascent oxygen. The nascent oxygen is highly reactive and thus combines with oxygen molecules and forms the molecules of ozone.
O2 -------------> [O] + [O] (Nascent)
O2 + O --------------> O3 Ozone