Global warming refer to the increased in the normal or average temperature on earth. Ever second the temperature of earth is increasing.According to the 2007 Fourth Assessment Report by the intergovernmental panel on climate change (IPCC),global surface temperature increased 0.74+0.18c(1.33+0.32f) during 20th century.Actually global warming is a major and serious problem of todays world.Each and every countries of the world is serious about it.Directly or indirectly every country is affect by global warming.