Assignmenat moudle 6 E

Global Warming Websites

National Geographic

http://environment.nationalgeographic.com/environment/global-warming/

National Research Defense Council

https://www.nrdc.org/stories/global-warming-101

NASA

http://climate.nasa.gov/evidence/

Union of Concerned Scientists

http://www.ucsusa.org/global_warming#.WDr149IrLiw