Global
warming is the phenomenon that increase the average of atmosphere's temperature, ocean, and land
earth. Global average temperature of the earth's surface increased 0.74 ± 0.18
°C over the last century. Most of the increase in temperature is caused by
increased concentrations of greenhouse gases due to human activities, among
which industrial waste directly without being processed, deliberate forest
fires, air pollution caused by motor vehicle exhaust, etc (Malihah E 2012).
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Concentration
of greenhause gases on the atmosphere will cause the reaction between CO2
(carbon dioxide) and O3 (ozone) so that the bonds between the
molecules of ozone will be detached and make ozone layer continues to thin. The
ozone layer is supposed to function as a protector of the earth from
ultraviolet (UV) radiation emitted by the sun.
