The Good Earth

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Across
  1. 2. The science of how plants are grown.
  2. 4. This is the breaking down of hard rock into smaller bits.
  3. 6. Made from fallen leaves, grass and other living material that has decayed.
  4. 8. The upper soil surface that is about 6 inches deep.
  5. 9. One of the most important materials on the planet is _____.
  6. 11. The solid layer of rock that is under all of the soil layers.
Down
  1. 1. This material holds a lot of water.
  2. 3. The whole food chain depends on soil, because it provides ____________.
  3. 5. This is similar to topsoil but with little humus.
  4. 7. Made of tiny rock and mineral particles- larger than clay & smaller than sand.
  5. 9. Made of small grains of worn down rocks and minerals.
  6. 10. Some soil has a lot of this in it. Create spaces for air pockets.