Air Pollution

Air Pollution Air pollution is the introduction into the reconcile wind of chemicals, particu latish matter, or biological materials that cause discomfort, disease, or death to humans, victimize other living organisms such as food crops, or damage the inwrought environment or built environment. The atmosphere is a complex dynamic natural gaseous system that is essential to support life on planet Earth. Stratospheric ozone depletion cod to air pollution has long been accept as a threat to human health as well as to the Earths ecosystems. Ozone Depletion Ozone depletion describes two distinct but related phenomena notice since the late 1970s: a steady lessen of about 4% per decade in the total flock of ozone in Earths stratosphere (the ozone floor), and a much larger springtime hang in stratospheric ozone all over Earths polar regions. The latter phenomenon is referred to as the ozone hole. In addition to these long-familiar stratospheric phenomena, there atomic f lake 18 also springtime polar tropospheric ozone. Causes The details of polar ozone hole formation differ from that of mid-latitude thinning, but the close grave process in both is catalytic devastation of ozone by atomic halogens.

[1] The main source of these halogen atoms in the stratosphere is photodissociation of synthetic halocarbon refrigerants (CFCs, freons, halons). These compounds argon transported into the stratosphere after being emitted at the surface. [2] Both types of ozone depletion were observed to add-on as emissions of halo-carbons increased. Effects Since the ozone point absorbs UVB ul traviolet light from the sun, ozone layer de! pletion is expected to increase surface UVB levels, which could moderate to damage, including increase in skin cancer. This was the reason for the Montreal Protocol. Although decreases in stratospheric ozone atomic number 18 well-tied to CFCs and there are good theoretical reasons to believe that decreases in ozone will bestow to increases in surface UVB, there is no direct...If you want to ruffle a full essay, order it on our website: OrderCustomPaper.com

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