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  • What percentage of the sun's harmful UV radiation is prevented from reaching the Earth's surface by the presence of ozone in the stratosphere?O

What percentage of the sun's harmful UV radiation is prevented from reaching the Earth's surface by the presence of ozone in the stratosphere?

Option: 1

50%


Option: 2

75%
 


Option: 3

99.5%

 


Option: 4

100%


Answers (1)

best_answer

Studies have shown that about 99.5% of the sun's harmful UV radiation is prevented from reaching the Earth's surface due to the presence of ozone in the stratosphere. This means that only a small fraction of the harmful UV radiation from the sun reaches the Earth's surface, which is crucial for protecting living organisms from its harmful effects. It's worth noting that while the ozone layer is highly effective at absorbing harmful UV radiation, it is still vulnerable to damage from human-made chemicals such as chlorofluorocarbons (CFCs), which can deplete the ozone layer and increase the amount of harmful UV radiation reaching the Earth's surface. This is why international efforts have been made to limit the production and use of CFCs and other ozone-depleting substances.

 

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