? What is the ozone hole

What is the ozone hole 

 

 

What is the ozone hole
What is the ozone hole

 

 

the ozone hole

 

Ozone is one of the necessary elements for life on Earth's surface. It is no less important than oxygen and water; This is because it absorbs most of the harmful ultraviolet rays that reach us from the sun, and thus protects known forms of life on the surface of the earth, and despite the importance of the ozone layer to humans, the activities of humans themselves have damaged the ozone layer, where the release of man-made chemicals such as chlorofluorocarbons, and halons Carbon tetrachloride, 1,1,1-trichloroethane, and methyl bromide lead to the depletion of the ozone layer in the stratosphere over Antarctica, knowing that the ozone hole means a thinning of the ozone layer in the stratosphere, and does not mean that there is actually a hole, which changes seasonally, At some times of the year the hole is bigger, while at other times it's not.

 

 

The discovery of the ozone hole

 

 

Scientists began measuring ozone in the atmosphere of Antarctica since 1957, and in 1976 they noticed a clear decrease in the ozone level. Scientists have already decreased the thickness of the ozone layer during the spring season by 10%, and then noticed that it is getting worse every spring than the previous one, then the scientists began to worry, they had just discovered the largest ozone hole in the world, and in 1985 the world realized that the ozone hole represented a big problem , and that it is caused by humans themselves, It is worth noting that scientists discovered the ozone hole a few years after its formation in the late seventies of the twentieth century, and NASA confirmed its existence in 1985.

 

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