(12) http://en.wikipedia.org/wiki/File:World_Koppen_Map.png. CC-BY-SA 3.0.
(13) NOAA.http://en.wikipedia.org/wiki/Image:Arctic_Ice_Thickness.gif.
GNU-FDL.
(14) NPS.http://en.wikipedia.org/wiki/Image:Organ_pipe_cactus_11.jpg. Public
Domain.
(15) http://en.wikipedia.org/wiki/Image:2000_Year_Temperature_Comparison.png.
GNU-FDL.
(16) he west coast marine climate zone.. Public Domain.
(17) http://commons.wikimedia.org/wiki/File:
Great_Basin_National_Park_102007_081.JPG. GNU-FDL.
(18) http://en.wikipedia.org/wiki/File:Humidcontinentalworldwiderev.PNG.
Public Domain.
(19) A male lion stalks the African savanna.. CC-BY 2.0.
(20) NOAA.http://en.wikipedia.org/wiki/File:Enso_lanina.png. Public Domain.
(21) http://en.wikipedia.org/wiki/Image:Annual_Average_Temperature_Map.jpg.
GNU-FDL.
(22) http://en.wikipedia.org/wiki/Image:Mauna_Loa_Carbon_Dioxide.png.
GNU-FDL.
(23) Peltom.http://en.wikipedia.org/wiki/Image:Bouldert.jpg. The photographer
of this work allows anyone to use it for any purpose including unrestricted
redistribution, commercial use, and modification..
(24) http://en.wikipedia.org/wiki/Image:Global_Warming_Predictions.png.
GNU-FDL.
(25) http://en.wikipedia.org/wiki/Image:Medclim.png. Public Domain.
(26) http://en.wikipedia.org/wiki/File:Utah_winter_scene_in_Great_Basin.jpg.
Public Domain.
(27) http://en.wikipedia.org/wiki/Image:Recent_Sea_Level_Rise.png. GNU-FDL.
(28) http://en.wikipedia.org/wiki/File:Buddist_Temple_Seoraksan.JPG. Public
Domain.
(29) NASA.
http://en.wikipedia.org/wiki/Image:Gulf_Stream_water_temperature.jpg.
Public Domain.
