GLOBAL WARMING You should start by explaining the following Introduction - what is global warming. Brief History - what was the climate some decades or even centuries ago. Comparison - compare it with climate change; which one is cause and which is effect. Reasoning - If you have collected any data then demonstrate it, clarify it and defense it. show it by making graph. Conclusion - what you conclude. Suggestions - ....... ... . . .. .. etc ,,,.,.,.,.,.,
First, you need to choose a topic and narrow it down depending on what you want to write. Make the thesis narrow and make sure that you have references to the statements that you make. Once you are done make conclusions and recommendations regarding the thesis. Read more details at http://www.ehow.com/how_4522055_thesis-statement-three-easy-steps.html.