(12) http://commons.wikimedia.org/wiki/File:Picea_glauca_taiga.jpg. Public
Domain.
(13) http://commons.wikimedia.org/wiki/File:Branta_canadensis1.jpg. Public
Domain.
(14) http://commons.wikimedia.org/wiki/File:Verhulst-Malthus.png. CC-BY-SA.
(15) http://commons.wikimedia.org/wiki/File:Baja_California_Desert.jpg.
CC-BY-SA 2.5.
(16) http://commons.wikimedia.org/wiki/File:Konik.jpg. GNU-FDL.
(17) http://commons.wikimedia.org/wiki/File:Darwin%27s_finches_by_Gould.jpg.
Public Domain.
(18) http://commons.wikimedia.org/wiki/File:Hummingbird_nest_withtwo
chicks_in_Santa_Monica,_CA._Photo_taken_June_26,_2006.jpg. Public Domain.
(19) Adrian Pingstone.http://commons.wikimedia.org/wiki/File:
Bristol.zoo.dead.leaf.mantis.arp.jpg. Public Domain.
(20) Paul Keleher.http://www.flickr.com/photos/pkeleher/987516260/. CC-BY.
(21) http://commons.wikimedia.org/wiki/Image:Biosphere2main.jpg. GNU-FDL.
(22) http://commons.wikimedia.org/wiki/File:Ocellaris_clownfish.JPG.
GNU-FDL.
(23) http://commons.wikimedia.org/wiki/File:
Monarch_Viceroy_Mimicry_Comparison.jpg. GNU-FDL.
(24) An example of an aquatic marine biome, pack ice.. GNU-FDL.
(25) http://commons.wikimedia.org/wiki/File:Amazon_Manaus_forest.jpg.
CC-BY-SA 2.5.
(26) http://commons.wikimedia.org/wiki/File:BrantaLeucopsisMigration.jpg.
CC-BY-SA 2.5.
