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Washington State University: Ask Dr. Universe: Where Does Dirt Come From?

Curated by ACT

Great question! Dr. Universe refers to her friend Jim Harsh, a scientist, from Washington State University to answer.

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Concepts
dirt, soil
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Additional Tags
ask dr. universe: where does dirt come from?, clorpt
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Classroom Considerations
  • Knovation Readability Score: 2 (1 low difficulty, 5 high difficulty)