Why are the enviromentalists worried about the considerable increase in the level of green house gases ? List the different green house gases other than carbon dioxide.

Explanation

Increase in the level of green house has led to considerable heating of Earth leading to global warming. Scientists believe that this rise in temperature is the cause of harmful changes in the environment and resulting in old climatic changes (example :El Nino effect), thus leading to melting of Himalayan and polar ice caps. Over many years, this can result in a rise in sea level that can submerge many coastal areas. Methane, Nitrous oxide and chloroflurocarbons are the green house gases other than carbon dioxide.