The world we live in is becoming more and more intolerablebecauseof environmental destruction. Bird flu and Sars are twotypicalexamples that environmental destruction may threaten ourlife.Besides, forest destruction , water and air pollution resultindecrease of planting land and unpleasant weather.

　　Serious as the problem seems, we can come up with some measurestodeal with it. First of all, the authorities should adopt thepolicyof “sustainable development”, and laws concerningenvironmentalprotection should be put into effect and enforcedstrictly just asour government has been doing.来源：www.exam

　　What s more, every citizen should realize the seriousness oftheproblem and make concerted efforts to protect our environment.Inaddition, planting trees helps improve and beautifytheenvironment.