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(a) Explain the role of UV radiation in the formation of ozone layer.
(b) Why is UV radiation considered as highly damaging to organisms ?
(b) Why is UV radiation considered as highly damaging to organisms ?
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(a) $\ce{O2 ->[uv] O + O}$
$\ce{O + O2 -> O3}$ / (Ozone)
UV radiations split molecular oxygen into free oxygen and these atoms combine with oxygen to form ozone. (1 Mark)
(b) It can cause diseases like skin cancer in human beings. (or any other harmful effect) (1 Mark)
$\ce{O + O2 -> O3}$ / (Ozone)
UV radiations split molecular oxygen into free oxygen and these atoms combine with oxygen to form ozone. (1 Mark)
(b) It can cause diseases like skin cancer in human beings. (or any other harmful effect) (1 Mark)