Wednesday, November 26, 2008
Ania K., class 1b, Poland
Pollution is a very import_ant problem in XXI century. It may be caused by natural sources, like volcanos, but also humen may couse it. Results of pollution are: global warming, ozone depletion, smog, acid rain, topospheric ozone and many other things. But we all can help. To help environment we need to: recycle, promote renewable energy, diminish issue of carbon dioxide. This is not very easy but it's worth it.