Science - Chapter 2: Lesson 2

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Across
  1. 2. loose, weathered material on Earth's surface in which plants can grow
  2. 5. the organisms that break the remains of dead organisms into smaller pieces and digest them with chemicals
  3. 7. a layer of soil that differs in color, texture, and composition from the layers above or below it
  4. 9. measures acidity in the soil
Down
  1. 1. a measure of how well the soil supports plant growth
  2. 2. another word for the B horizon and usually consists of clay and other particles of rock, but little humus
  3. 3. a crumbly, dark brown soil that is found in the A horizon and is a mixture of humus, clay, and other minerals
  4. 4. the solid layer of rock beneath the soil
  5. 6. soil that is made up of about equal parts of clay, sand, and silt
  6. 8. a dark-colored substance that forms as plant and animal remains decay