As we all known,many disasters happened these years,which cause many attentions from the people.So the governments everywhere in the world try to forbid cutting down the trees and restricting the emissions of waste water.whereas,we should all be responsible to our planet,because we only have a planet.First we should tell people around us to pay attention to this problem,due to the fact that there is some of the people who don't care about this.Second,we should decrease the toxic gas from ourselves,for instance we can walk to work instead of driving to work.we should not only care about the calamities in front of us but also care about our offsprings,whether they can lead a happy life on this planet or not.In conclusion,we should be responsible to our planet