Earth is our home,she is like our mother.But now the pollution in the earth are more serious than before.Such as the air pollution,the water pollution and so on.If we go on polluting the earth,there will be more pollution and we will lose our home.We must do some things to save the earth,to protect our home.First,use fewer cars and lights.You can take bus or ride bike when you go out.Second,we must stop the factories which produce pollution.Third,plant more trees and use less water.Those are very important for saving the earth.If we keep doing these jobs,I’m sure that our earth will be more beautiful and greater in the future.