Nowadays the problems about environment become more and more serious. There are so many pollutions and natural disasters in the world, and they all have the unpredictable effect. More and more factories function, follow that also have some water pollutions, air pollutions. As for the special air can make holes in the ozone layer...
Canda is a beautiful country,because they protect their environment.How should we protect our environment?we shouldn't use too much water.we should go to shool by bus......Pollut...
