6 Science Lesson 5

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Across
  1. 4. _________ space describes the space between soil particles
  2. 5. soil _________ describes how well soil can support plant growth
  3. 6. a measure of how acidic or basic a soil is
  4. 7. ______ colored soil that indicates poor drainage and low nutrients
  5. 8. remains of dead organic matter
  6. 10. Horizon A is often referred to as this and contains large amounts of humus
Down
  1. 1. ________ rock is the source of inorganic soil particles
  2. 2. a loose mixture of small rock fragments, organic matter water and air
  3. 3. animals that that loosen and mix the soil as they crawl through it
  4. 8. soil __________ is a model showing soil layers A, B, C
  5. 9. _________ or brown colored soils are often rich in humus