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Have you ever played in dirt from your yard? You were actually playing with one of the most important natural resources on earth - soil. Watch a short video on soil and a second video showing the phases of plant development using time-lapse photography. Teacher tips are provided along with background information on soil.
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- Knovation Readability Score: 2 (1 low difficulty, 5 high difficulty)
- The intended use for this resource is Instructional