G CH 2.2 How Soil Forms Vocab

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Across
  1. 3. soil organism that breaks down the remains of organisms and digests them
  2. 5. a layer of soil that differs in color and texture from the layers above or below it
  3. 7. crumbly dark brown soil that is a mixture of humus clay and other minerals
  4. 10. dark-colored substance that forms as plant and animal remains decay
Down
  1. 1. the solid layer of rock beneath the soil
  2. 2. the measure of how well the soil supports plant growth
  3. 4. loose weathered material on Earth's surface in which plants can grow
  4. 6. soil that is made up of equal parts clay, sand and silt
  5. 8. usually consists of clay and other particles washed down from the A horizon
  6. 9. the loose layer of dead plant leaves and stems on the surface of the soil