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4.2 Soil Formation and Erosion

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Soil is the loose mixture of weathered rock, organic matter, water, and air at Earth's surface that supports plant life. Soils are formed when parent material (the underlying bedrock or sediment) is weathered, transported, and deposited.

In this unit

9 lessons

  1. 4.1Plate TectonicsPreview lesson
  2. 4.2Soil Formation and ErosionThis lesson
  3. 4.3Soil Composition and PropertiesPreview lesson
  4. 4.4Earth’s AtmospherePreview lesson
  5. 4.5Global Wind PatternsPreview lesson
  6. 4.6WatershedsPreview lesson
  7. 4.7Solar Radiation and Earth’s SeasonsPreview lesson
  8. 4.8Earth’s Geography and ClimatePreview lesson
  9. 4.9El Niño and La NiñaPreview lesson

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