10-10-2007 Assignment 2 : Dscribing cause and effect

An effect of global warming

Many researches show that increase in greenhouse effect gases such as carbon dioxide is one of the main causes of global warming. These gases absorb a reflected a part of sun’s energy from a surface of the earth, although the sun’s energy come from directly goes through these gases. Many scientists predict that this unbalance makes air temperature rise as much as about six degree Celsius in 100 years compared with average of temperature in recent years. This increase in temperature makes an ice around the North and South Pole melt, a melting ice that result in raising a sea level. Consequently, raising a sea could have serious negative effect on the world economy, because rising of a sea make many significant cities for world economy such as NY, Tokyo and Hong Kong sink below the surface.