environmental puzzle

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Across
  1. 3. water that fills the cracks and spaces in underground soil
  2. 6. Degradation of land
  3. 7. refund personal purchases promoting positive enviromental solutions
  4. 10. Steps taken to control pests
  5. 11. the science or practice of farming
  6. 12. pollution coming from many sources
Down
  1. 1. A relationship between two organisms in which one organism benefits and the other is unaffected
  2. 2. The process of burning waste materials to reduce volume and mass
  3. 4. A group of ecosystems with similar climates and organisms
  4. 5. a process that allows the organic material in solid waste to be decomposed into soil
  5. 8. The introduction of dangerous chemicals
  6. 9. A group of individuals that belong to the same species and live in the same area