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Missouri Conservationist Online: Missouri Cave Life
Excellent article describing a trip inside a cave. The article discusses the cave habitat and changes that occur as you go deeper into the cave. Includes interesting photographs.
Iowa State University
Iowa State University: Iowa Insect Information Notes Flies
Flies are almost always known as pests, especially the types called gnats that bite! These information sheets provide descriptions of several types of flies as well as life cycles and ways to reduce these annoying bugs.