Environment is very important to us so we should try our best to protect it .With the development of science and technologe the pollution is becoming more and more serious .Many rivers have been polluted by the dirty water from the factories.The trees have been cut down to build houses .All these have done damage to us.So we must take immediate action to protect our environment in order to have a better earth to live.First we should take buses or ride bikes instead of driving cars.Second we should plant more trees to clean the air and protect the soil being carried away. Finally we should make everyone have the sense of responsibility of protecting our environment .Only in this way can we protect our environment.