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Global Warming温室效应英文.ppt
* Why should we be concerned about Global Warming? Many people consider that Global Warming is the greatest environmental threat of the 21st Century. However, during the 80s and early 90s scientists argued about the causes and effects of global warming. In the late 1990s scientists reached a consensus that global warming was a cause for concern. So, why should you be concerned about global warming? “Why should we be concerned about Global Warming?” Your group assignment is to prepare and present a 5 minute power point presentation investigating the following question … “Why should we be concerned about Global Warming?” Assignment Your presentation should include: Introduction Explanation of the causes of global warming (incl. evidence) Explanation of the effects of global warming in both MEDCs and LEDCs (incl. evidence) Evaluation of the different viewpoints held about global warming by MEDCs and LEDCs Solutions to the problem Conclusion (incl. your own opinions on this subject) Introduction Explanation of the causes of global warming Explanation of the effects of global warming in both MEDCs and LEDCs Explanation of the effects of global warming in both MEDCs and LEDCs *
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