To begin with,unlike individual,different countries can cooperate and implement legislation which limitates all the countries in the globe,solving environmental issue more efficiently.A perfect example can be found in global warming,a phenomenon caused by carbon dioxide,since global temperature continuously rise up,especially with the increase of sea level,many countries have generally come to recognize the significance of protecting environment.As a result,in 2005, more than 100 countries joint to sign on "Kyoto Protocol" and until now is following its regulations on charging the release of carbon dioxide in industry,planting numorous trees and implementing environmental-friendly equipments,etc.what's more,top environmentists and scientists from the world devote themselves to studying how to alleviate environmental problems.However,a sole person cannot fulfill above assignments.
Secondly,social effect and power of individual is not equal to that of country owing to the country's abundant control on media,TV,and jounalism.Hardly could a sole person let all the citizens be aware of that their living condition is becoming worse throughout the Internet.Government of a country,like the USA,however,as easy access to media,can demonstrate the fact of environmental issue on "the Times" or "the Economist". In addition,government is capable of regulating prices while individual cannot.In virtually, in oder to alleviate air pollution ,government in American encourage people to