HOW SOIL FORMS

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Across
  1. 5. AN ORGANISM THAT GETS ENERGY BY BREAKI8NG DOWN BIOTIC WASTES AND DEAD ORGNAISMS
  2. 7. DARK-COLORED, ORGANIC MATERIAL IN SOIL; DECAYING PLANT AND ANIMAL MATTER
  3. 9. A RANGE OF VALUES USED TO INDICATE HOW ACIDIC OR BASIC A SUBSTANCE IS
  4. 10. THE CRUMBLY TOPMOST LAYER OF SOIL MADE UP OF CLAY AND OTHER MINERALS AND HUMUS
Down
  1. 1. A LAYER OF SOIL THAT DIFFERS IN COLOR AND TEXTURE FROM THE LAYERS ABOVE OR BELOW IT
  2. 2. ROCKS THAT MAKE UP EARTH'S CRUST; ALSO THE SOLID ROCK LAYER BENEATH THE SOIL
  3. 3. A MEASURE OF HOW WELL SOIL SUPPORTS PLANT GROWTH
  4. 4. RICH, FERTILE SOIL THAT IS MADE UP OF ABOUT EQUAL PARTS OF CLAY, SAND, AND SILT
  5. 6. THE LOOSE, WEATHERED MATERIAL ON EARTH'S SURFACE IN WHICH PLANTS GROW
  6. 8. THE LAYER OF SOIL BELOW TOPSOIL THAT HAS LESS PLANT AND ANIMAL MATTER THAN TOPSOIL AND CONTAINS MOSTLY CLAY AND OTHER MINERALS