Nowadays ,many people are talking about low carbon living. I think each and every one of us is responsible for the greenhouse gases we emit in our daily actions and choices. Therefore, combating climate change is going to take the combined efforts of everyone on the planet.

20xx World Expo was held in Shanghai. Shanghai Expo theme is Better City, Better Life. As a student, we should do something about environmental protection. For example, plant trees, save water and less your car.Thanks!