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  PowerPoint: Presentation with Audio: Soil 2: Dirt (multi-age)
PowerPoint: Presentation with Audio: Soil 2: Dirt (multi-age) - preview 1
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PowerPoint with Audio: What is the composition and nature of soil, commonly called dirt? Part 2 of 4 soil presentations in the Living on Planet Earth Series. This program describes the composition and function of soil. It also encourages that we properly dispose of hazardous materials, recycle and compost so that soil can produce nurturing food, dependable clothing fiber and building materials.
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