• Biomes Vocabulary from NASA

• Biomes of the World from Missouri Botanical Garden

• The World's Biomes from UC Berkeley

• Earth Floor: Biomes from NASA's Classroom of the Future

• Encyclopedia of Biomes, 3 volume set, by Marlene Weigel, in the library

• Introduction to Biomes from Radford University

• National Geographic Magazine

• EBSCO HOST, from the Hawaii State Public Library, for scholarly periodical articles (you can use the school's library card)