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

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

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Answer 1 · 2015-09-22T19:52:35

Ozone is formed by the reaction of a oxygen molecule with a oxygen atom due to high UV radiation
$3 O_{2} ⇌ 2 O_{3}$ $3O_2rightleftharpoons2O_3$
process is as
$O_{2} \to 2 O$ $O_2->2O$ (1)due to the energy of $U V$ $UV$ rays
$2 O_{2} + 2 O ⇌ 2 O_{3}$ $2O_2+2Orightleftharpoons2O_3$ (2)
(1)-(2)
$3 O_{2} ⇌ 2 O_{3}$ $3O_2rightleftharpoons2O_3$
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

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

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