(9) http:
//upload.wikimedia.org/wikipedia/commons/0/0b/Forest_Osaka_Japan.jpg.
CC-BY-SA.(10) http://www.nps.gov/archive/deto/tower4.jpg. CC-BY-SA.
(11) http://en.wikipedia.org/wiki/File:Potholeinlosangeles.jpg. CC-BY-SA.
(12) http://en.wikipedia.org/wiki/File:Soil_profile.png. CC-BY-SA.
(13) http://commons.wikimedia.org/wiki/File:ClimateMapWorld.png. GNU-FDL.
(14) http://en.wikipedia.org/wiki/File:Intikawan_Amantani.jpg. GNU-FDL.
