As we all know that we are living on the earth and we must depend on it .But there are many problems such as air pollution,water pollution and so on.So we must take some effective measures to protect our earth in order to have a better place to live .First we should plant more trees to fresh the air around us.Second we should educate those who cut down trees without limit .Third we should take buses to school or to work to reduce the carbon dioxide in the air .Finally we should try to make everyone aware of the situation we are facing and persuade them to take responsibility for our environment .