Citations
•www.wallpaperup.com - 1920 × 1080 -
•classbb.wordpress.com - 1600 × 1200 -
•jocelyntrainforest.blogspot.com - 916 × 973 -
•http://web.b.ebscohost.com/ehost/ebookviewer/ebook/ZTg2MHhuYV9fNjIzNDMzX19BTg2?sid=c8fc208e-7208-4159-a911-2a1e16341fb9@sessionmgr115&vid=3&format=EB&lpid=lp_10&rid=0

•http://www.nature.org/ourinitiatives/urgentissues/rainforests/rainforests-facts.xml

http://www.nature.org/ourinitiatives/urgentissues/rainforests/rainforests-facts.xml

http://www.srl.caltech.edu/personnel/krubal/rainforest/Edit560s6/www/whlayers.html