1. As It Is

7.  http://www.cbo.gov/ftpdocs/101xx/doc10115/Figure 1.gif http://www.cbo.gov/ftpdocs/101xx/doc10115/Figure 1.gif  http://peltiertech.com/images/2009- 05/Greenhouse_Gas_by_Sector_80.png http://peltiertech.com/images/2009- 05/Greenhouse_Gas_by_Sector_80.png  http://pugetsoundblogs.com/forecasting- kitsap/files/2009/03/global_warming.jpg http://pugetsoundblogs.com/forecasting- kitsap/files/2009/03/global_warming.jpg  http://keetsa.com/blog/wp- content/uploads/2007/09/global-warming.jpg http://keetsa.com/blog/wp- content/uploads/2007/09/global-warming.jpg  http://mollymintz.com/ESW/Images/Global_Warming _polar_bear.jpg http://mollymintz.com/ESW/Images/Global_Warming _polar_bear.jpg  http://en.wikipedia.org/wiki/Global_warming http://en.wikipedia.org/wiki/Global_warming  Book: Global warming what is it?  Shanthanu’s Brain