http://www.saskschools.ca/~nlsd/grassroots/multi/biomes/taiga/
http://www.bishops.ntc.nf.ca/science/biology/biomeadaptations/sld004.htm
http://www.needham.mec.edu/High_School/cur/bio_99/p7/egcw_p7/taiga.htm
http://curriculum.calstatela.edu/courses/builders/lessons/less/biomes/introb iomes.html
http://www.runet.edu/~swoodwar/CLASSES/GEOG235/biomes/taiga/taiga.html