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Get the answers to frequently asked questions from S.K. Worm.
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Learn all about soil and the things that live in it.
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Includes a soil gallery, where you can see the Soil of the Month and read stories in "Once Upon a Sandy Loam." Offers other educational activities.
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Songs by the department of agriculture about mud.
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Explore soil ecology, meet microscopic creatures, and journey underground in the virtual reality voyage of the Earthship. From the Discovery Channel school.
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This system for classifying soils is one of the most widely used soil classification systems in the world. Collection of information and images to illustrate the distribution, properties, ecological significance, and use of these 12 soil orders.
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Soil biology, including a virtual tour of microorganisms.
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