[dichotomous tree]
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Links

Arthropods

Key to Insects, Frontier High School, Red Rock, OK
http://pc65.frontier.osrhe.edu/hs/science/binsect.htm

Aquatic Critter Key Game, Wisconsin Dept of Natural Resources
http://www.dnr.state.wi.us/org/caer/ce/eek/critter/watercritter/critterindex.htm

Arthropod Leaf Litter Key, Hope College, Holland, MI
http://www.hope.edu/academic/biology/leaflitterarthropods/

Key to Beetles, Northwestern University & the Field Museum of Natural History
http://cube.it.nwu.edu/urbanwatch/dichotomous_organism.cfm?SpeciesID=1&FirstTime=1

Insect Lesson and Key, Washington Post Article
http://washpost.com/nielessonplans.nsf/0/4125FE3242C0753885256AE2005F53E7?OpenDocument&sol=0

Marine Organisms

Keys to Marine Invertebrates, Marine Biological Lab, Woods Hole, MA
http://hermes.mbl.edu/BiologicalBulletin/keys.html

Key to Corals, Dept. of Geosciences University of Iowa
http://porites.geology.uiowa.edu/

Intertidal Zone Key of Marine Organisms
http://neptune.spaceports.com/~marine/palette.htm

Plants

Key to Flowers, Dept. of Zoology University of Toronto
http://www.zoo.utoronto.ca/able/volumes/vol-12/7-timme/7-timme.htm#KPP

Fruit Key, California State University
http://130.17.2.215/key/key.html

Tree Identification, National Arbor Day Foundation
http://treelink.org/whattree/index.htm

Key to Common Conifers of the USA, American Museum of Natural History
http://www.amnh.org/learn/biodiversity_counts/ident_help/Text_Keys/conifer_key.htm

Key to Tree Identification, Blue Ridge Community College, VA
http://www1.br.cc.va.us/murray/Interactive_Key/index.html

Key to Common Beans, Park University, Parkville, MO
http://www.park.edu/bhoffman/courses/bi225/labs/Dichotomous%20Keys%202.htm

General/How To

Interactive Keys and Identification, The Guardian, United Kingdom
http://www.learn.co.uk/default.asp?WCI=Unit&WCU=2423

Key Activities and Lessons, Louisiana Sea Grant
http://lamer.lsu.edu/projects/edonahalfshell/dicotkey1.htm

Other Interesting Keys

Key for Virus Identification
http://www.geocities.com/CapeCanaveral/Launchpad/6083/taxkey.html

Keys on Bacteria Through Vertebrates, AECOS Environmental Consulting, HI
http://www.aecos.com/CPIE/keys_index.html

Key to Common Reptiles and Amphibians, Cortland University, New York
http://www.cortland.edu/herp/keys/howtokey.htm#3.a.

Key to Common Mammals, University of Kansas
http://www.ku.edu/~mammals/specieskey.html

Key to Minerals, James Madison University
http://geollab.jmu.edu/Fichter/Minerals/

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