One possible version： With the levels of carbon dioxide in the air increasing rapidly, the global temperature continues going up, which would be a catastrophe. The rise of temperature will result in a higher sea level, more severe storms, floods, droughts, and even the extinction of species. The UN conference in Copenhagen focused on future actions on climate change, which has attracted more and more people's attention. It is realized that leading a lowcarbon life is necessary. Turn off the lights, the TV, the computer and so on if we are not using them. Recycle cans, bottles, plastic bags and newspaper if possible. Walk or ride a bike if we can. Together, individuals can make a difference. If all of us think about the problems and lead an environmentallyfriendly life,we will have a better and cleaner planet in the future.
