Question

How was the O-zone formed and why is it important for life on earth?

Answer 1

Ozone is formed by the reaction of a oxygen molecule with a oxygen atom due to high UV radiation
`3O_2rightleftharpoons2O_3`
process is as
`O_2->2O`(1)due to the energy of `UV`rays
`2O_2+2Orightleftharpoons2O_3`(2)
(1)-(2)
`3O_2rightleftharpoons2O_3`
It is imprtant for the life at higher altitudes as the it absorbs the UV rays and dont allow them to fall on earth
at lower altitudes ozone is a harmful gas to the life on earth