“The incredible diversity of life on this planet, most of which is microbial, can only be understood in an evolutionary framework” — Carl Woese, 2000
- http://en.wikibooks.org/wiki/General_Biology/Classification_of_Living_Things/Classification_and_Domains_of_Life 3 Domains, 6 Kingdoms of Life on Earth ** OTA’s Choice **
- http://www.ucmp.berkeley.edu/alllife/threedomains.html
- http://www.biology.iupui.edu/biocourses/N100/2k23domain.html
- Great Independent Reading Textbook: http://www.physicalgeography.net/fundamentals/9b.html
- **Great Resource** Kids Science Links Collection: Biological Classification: http://sciencespot.net/Pages/kdzbioclass.html
- Palomar College: Classification of Living Things Activities; Study Cards, Crossword Puzzles
- Animal Classification: http://animalia-life.com
- http://www.pnas.org/content/93/3/1071.full.pdf