A) infra-red (IR)
B) ultraviolet ray
C) X-ray
D) gamma rays
Correct Answer: B
Solution :
Ozone is a form of oxygen. Oxygen occurs in three different forms in the atmosphere; as oxygen atoms (O), as oxygen molecules \[({{O}_{2}})\] and as zone \[({{O}_{3}}).\] Ozone's unique physical properties allow the ozone layer to act as our planet's sunscreen, providing an invisible filter to help protect all life forms from the sun's damaging UV (ultraviolet) rays. Most incoming UV radiation is absorbed by ozone and prevented from reaching the Earth's surface. Without the protective effect of ozone, life on Earth would not have evolved the way it has
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