1、In recent years ,our word changes very rapidly.The great development of economy brings us to a world full of factory.and because of this ,The climate has been getting steadily warmer and warmer.As we all know , CO2 is considered to be one of the greatest causes of global warming.F actory give out mo
2、st of the garbage gas witch contains much CO2. Some factory give off waste gas without any treatment.The reform of translantion also has its bad effect to the enveronment,that is to say,the cars ,buses,motobikes give out CO2. In addition , With the appearance of agrculture, more and more threes been
3、 cut down in order to make place for growing cropes.People fired threes or grass to keep warm or cook meals .Naturely, a lot of waste gas -and go into the atmosphere 。It is urgent that immediate and effective actions should be taken right away.First,the beautiful green clean world is disappearing -.
4、We cant even breath the fresh air. Besides it cause the sea level to rise and many natural disasters to strike.What is more, it disturbs weather patterns, causing droughts, severe storms, hurricanes .Absolutely ,this is quite a theraten to the earth.We should do our best to reduce the effection of the globe warming。
