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Unformatted text preview: chemicals to drive their metabolism. Heterotrophic: Oxidize reduced organic materials produced by other organisms to provide energy to drive their metabolism. Soil organisms can be: Symbiotic: Live in a mutually beneficial association with an other species. Parasitic: Live in an association with another species, but at the expense of the other species. Free living: Independent of parasitic or symbiotic associations with other species....
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- Spring '08