Question no 183 SSC CGL Tier 1 General Awareness Questions and Answers Online Test 1

SSC CGL Tier 1 :: GIR Test 1

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1 .

Ozone layer of the Earth's atmosphere is important for living organisms because it

[ A ] prevents entry of ultra-violet rays
[ B ] prevents entry of X-rays
[ C ] maintains level of oxygen on Earth
[ D ] prevents acid rain on Earth

Answer : Option A

Explanation :

The ozone layerrefers to a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet (UV) radiation. Ultra Violet radiation is very harmful to all living things. UV radiation can be harmful to the skin and is the main cause of sunburn; excessive exposure can also cause cataracts, immune system suppression, and genetic damage, and skin cancer

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