Air Pollution

Air Pollution Air pollution is the introduction into the wanton 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 graphic 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 recognize as a threat to human health as well as to the Earths ecosystems. Ozone Depletion Ozone depletion describes two distinct but relate phenomena notice since the late 1970s: a steady sort out of about 4% per decade in the total pile of ozone in Earths stratosphere (the ozone floor), and a much larger springtime lessen in stratospheric ozone all over Earths pivotal regions. The latter phenomenon is referred to as the ozone hole. In addition to these long-familiar stratospheric phenomena, there atomic morsel 18 also springtime polar tropospheric ozone. Causes The details of polar ozone hole formation differ from that of mid-latitude thinning, but the close consequential 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 ar transported into the stratosphere after being emitted at the surface. [2] Both types of ozone depletion were observed to sum up as emissions of halo-carbons increased. Effects Since the ozone forge abs orbs UVB ultraviolet light from the sun, ozo! ne layer depletion 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 ar well-tied to CFCs and there are good theoretical reasons to believe that decreases in ozone will train to increases in surface UVB, there is no direct...If you want to give out a full essay, order it on our website: OrderCustomPaper.com

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