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Word Count: 2,300
Smog has been around for a pretty long time people just knew it as something else Smog comes from the word smoke and fog and thats practically what it is It was a serious problem before before nature and humans went unharmed in the presence of smog but now its serious What does all of this polluted air do to the body The answer depends on the situation How long a person is exposed to pollution the type and concentration the place time and day temperature weather and more But one thing is certain Smog is harmful to your health Lungs are ozones primary target Studies on animals show that ozone damages cells in the lungs airways causing inflammation and swelling It also reduces the respiratory systems ability to fight infection and remove foreign particle Ozone may pose a particular health threat to those who already suffer from respiratory problems such as asthma emphysema and chronic bronchitis About 10 of the basins approximately 14 million residents fit into this category Ozone may also pose a health threat to the young elderly and cardiovascular patients Ozone affects healthy people as well In 1990 the State Air Resources Board established a new health advisory level in response to mounting evidence that smog affects healthy exercising adults at lower levels than previously believed Now a health advisory is issued at 15 parts per million on the pollutant standards index before a first stage smog alert is called when ozone levels reach 20 ppm During a health advisory everyone including healthy adults and children are advised to
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