An Inconvenient Truth....Evaluation

In my opinion, Al gore made his presentation about global warming because he is against President Bush’s strategies. He shows that the United Stated government’s army uses a lot of machines that produce big percentage of carbon dioxide. According to him the gasses layer around the earth block the radiation from going back to the space but how those radiation goes in to the earth and pass those layers of gasses. He said also all scientists agree that the main cause of the global worming is greenhouse gasses. But a lot of scientists think that the cause of the global worming is the water vapor.I think that scientists still not sure about the main cause of this climate changes. But still we have to keep our earth clean and reduce the pollutions level by using renewable sources. Hoever, he does a great job presenting the various forms of overwhelming evidence for global warming and mankind's link to it, but he doesn't do it in a political or spiteful way. He shows global temperature and atmospheric carbon patterns, and he shows that our last 20 years have been the highest by a long shot over the previous 600,000 years.