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Pipeline: Soil Characteristics Demystifying Dirt [Pdf]
Soil is the foundation of conventional on site wastewater treatment.The drainfields used with on site systems work because the soil around the trenches acts as a filter and removes organic matter, some of the nutrients present in...
Utah Education Network
Uen: How Are Soils Classified?
Students examine soil samples for this activity and decide classify them according to whether they are sandy, silty or clay.
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