I want to do something for the earth because the earth is in danger.There is too much pollution and there is a globle warming,too.Firstly I go to school by bike and on foot instead of by car and by bus.Secondly,I always go shopping with my own cloth bag instead of the plastic bag.Thirdly,I try to save water and turn off the light when I leave.Fourthly,I will not throw the little or spit in the public.I will pick up the rubbish and throw it into the dustbin.Finally,I should plant more flowers and trees to make the earth look more beautiful.