Composting

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Across
  1. 2. material from the earth that easily degrades
  2. 3. the by-product of composting
  3. 6. no oxygen
  4. 9. assorted organic material that is in the process of decay
Down
  1. 1. material that can degrade naturally
  2. 4. oxygen
  3. 5. organisms that break down organic material
  4. 7. dark brown, nutrient-rich soil
  5. 8. the gas which is emitted when food waste decomposes in landfills