The Number One Cause Of Climate Change

Climate change has been disputed by people and scientists for a very long time. Some believe that human activity has nothing to do with climate change, while others believe that humans are the number one cause of climate change. Two of the most common arguments I found were that the earth has been warming and glaciers have been melting since the last ice age. The second is that rising CO2 levels do not necessarily cause global warming. Skeptics believe that although the earth has warmed 1.4 degrees over the 20th century it is still within the 5-degree fluctuation of the last 3000 years. Many records reveal that the 20th century is probably not the warmest or uniquely extreme climatic period of the last millennium. Skeptics also believe that