Chapter 4

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Across
  1. 3. decaying substance that originated from a once-living organism
  2. 5. a product that neutralizes the odor
  3. 8. a product that covers up odors by introducing another odor
  4. 10. modifies by genetic means
  5. 11. a facility that uses the parts of dead animals and converts them into usable products
  6. 13. contains bacteria that creates a digestive process that eliminates odor
Down
  1. 1. a pond of water used to hold animal waste
  2. 2. a chemical product that kills bacteria causing odor
  3. 4. found above ground
  4. 6. environmental protection agency
  5. 7. a natural process used to break down organic materials in an aerobic setting
  6. 9. the responsible use and care of the environmental resources
  7. 12. an atmospheric gas that absorbs and emits heat