1、What is global warming?vWith the development of economy,more and more greenhouse gases are being discharged into the air.CO2 makes up about 70%of the greenhouse gases,which is considered to be one of the greatest causes of global warming.The cause of warmingThe cause of warmingThe dangers of global
2、warming The effects of global warming can have many unforeseen side effects.vif the earths average temperature 4 degrees Celsius,the world will have more than 30 million people water shortages.vWarmer temperatures will cause ice to melt at the earths poles,which can lead to the sea levels rise,many
3、islands will be drowned,some island may not exist.Yes,our earth is heating up.What can we dov we should use more clean energy and less coal and oil.And we should go to work on foot or by bus instead of driving a car if possible.Using solar energyWe can ride bikes to workvwe should plant more trees,because plants can turn CO2 into oxygen.vLet s begin to start saving energy,protecting the environment and our survival homeland!Our home will be more and more beautifulv the endvThank you!
