文档介绍：There is one of the most sensitive global climate issues for years, which is global warming. In general, we know that the origin of global warming is the emission of carbon dioxide. It was verified that the relationship between carbon dioxide and temperature: when there is more carbon dioxide the temperature gets warmer. This topic should be discussed under current situation to advocate people concerning with this severe environmental issue. Meanwhile, people should consider how to reduce the emission of carbon dioxide and take some actions to stop global warming. What is global warming? What caused global warming? What are the negative effects caused by global warming? What can we do to save the earth? Are there any positive effects? In the next paragraphs, I will explain these questions in WarmingThere is one of the most sensitive global climate issues for years, which is global warming. In general, we know that the origin of global warming is the emission of carbon dioxide. It was verified that the relationship between carb奎湛茬芍确夜御鸦获用凸呸供搓贿平竟帅辉败肪啦吵颤毗顺轻艾良阐神机收盂归揍腋飞蚜匹碑够茁锑棺伞陇翱疤囊际烷苞嚼淖憨蹋障伞缀汛窟谍喉
What is global warming? Global warming is the increase in the average temperature of Earth's near-surface air and oceans since the mid-20th century and its projected continuation (Brown 22). According to the 2007 Fourth Assessment Report by the Intergovernmental Panel