The Rebuttal

This is a response to Peter's opening statement. I would like to start out by pointing out the big contradiction that I found in his opening statement. Peter stated that human activities do not effect global warming at all, but at the end of his opening statement he happened to mention that Humanity could just built up not bigger than 1 percent of contribution to the warming of the earth. So even though one percent seems to be little difference, he still happen to mention that it is possible for human activities to effect global warming when he clearly stated in the beginning that it is impossible for human to do such a thing. I would also like to say that it is not true that Co2 is a very weak green house gas and has a little to no effect to the temperature. From the data that I gathered, Co2 levels were 389ppm (parts per million) as of April 2010, and this was the highest they have been in the past 650,000 years. This increase of C02 was an important contribution to the 1 Fahrenheit to 1.4 Fahrenheit temperature over the 20th century. From what my opponent said, water vapor is what really causes the green house effect to happen. In a way, I agree with that statement, but C02 that are caused by human activities also have a substantial impact too. As long as C02 does have some impact on the earth's temperature, this small increase in the temperature amplifies the water vapor into a much greater rate than it is now since the warmer the temperature, the more water vapor there would be. It would be like a chain reaction from human activities creating more C02 into the air to making the temperature warmer to the increasing of water vapor which therefore shows that human activities is a crucial part to the warming of the earth. Overall, his opening statement were filled with rubbish assumptions with no evidence whatsoever backing up to what he was saying.