Exam 6

1. Climate change can be caused naturally and unnaturally.  Volcanic eruptions, for example, release ash, gases, and other "natural pollutants" that contribute to climate change.  In unnatural terms, many human actions can contribute to the climate change.  Even though they may not directly cause it, many of them accelerate climate change in one way or another.  For example, driving a car releases CO2 as it burns gasoline, heating systems for homes may burn oil and gasoline, which releases pollution.  The NOAA states that the rise in temperatures over the past couple of decades has not been global.  In fact, some areas of Earth has actually cooled, while other areas, such as North America and Eurasia have been warming.  Yes, even though global warming is real, the United States east coast has still had some serious winter weather over the past couple of years.  Just because the average (key word: average) global temperature has been rising does not mean that no major winter weather will occur.  Again, the NOAA states that in some parts of the world, the average temperature has risen, not fallen.  So, these blizzards are not a huge surprise, despite all of the confusion with global warming, climate change, and the existence of them both.