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Dynamic Earth 5
lesson 5
Term | Definition |
---|---|
soil | a loose mixture small rock fragments organic matter water and air that can support the growth of vegtation |
humus | decayed organic matter |
soil profile | a vertical section of soil that shows all of the different layers |
soil horizon | each layer in the soil that shows the physical properties |
microorganism | a microscopic organism usually a bacterium virus or fungus |
decomposer | an organism that decomposes organic material |
leaching | when water carries materials into the lower layers of soil |
soil texture | describes the relative amounts differently sized soil particles |