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Intreoduction what expain problems but not in deatal effect who "Global warming will be the greatest environmental challenge in the 21st century. " - Vice President, Albert Gore. Body- who what when were why how Who- us as people and politicins leading contries What-what are the definitions what prblems does this causes what are the effects of doing nothing WHAT YOU CAN DO TO DECREASE GLOBAL WARMING. There are several things which you can do directly after reading this paper. However, some of the actions which we all have to take will slightly decrease your present standards of living. First, since the largest portion of electricity in Australia and many other countries is produced by burning coal, we should try to cut-down on our demand for electricity. Coal combustion creates the largest amount of CO2 per energy unit of any fossil fuel. Coal and oil together represent 80% of Australias fuel supply used to generate electricity. When we reduce electric power use, we save money, breathe cleaner air, and help to reduce the global warming problem. Every kilowatt-hour of electricity saved keeps 1.