Ecology

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Across
  1. 2. An organism that makes its own food
  2. 5. The introduction of harmful substances into nature
  3. 6. A linear sequence of energy transfer
  4. 8. A resource that cannot be quickly replaced
  5. 9. Reuse of materials to reduce waste
  6. 11. A system of living organisms interacting with their environment
  7. 12. An organism that eats plants
  8. 18. The role of an organism in its ecosystem
  9. 22. An organism that breaks down dead matter
  10. 23. Protection of natural resources
  11. 24. An organism that is hunted by predators
  12. 25. A trait that improves survival
  13. 27. Use of resources without depletion
  14. 29. A resource that can be naturally replaced
  15. 30. An organism that eats other organisms
  16. 31. The variety of life forms in a given area
  17. 32. Long-term weather patterns
  18. 33. The complete disappearance of a species
Down
  1. 1. Movement of carbon through living and nonliving systems
  2. 3. An organism that eats animals
  3. 4. A network of interconnected food chains
  4. 7. A group of the same species in one area
  5. 9. The release of energy from food
  6. 10. Large-scale removal of forests
  7. 13. A large region defined by climate and vegetation
  8. 14. Seasonal movement of organisms
  9. 15. An organism that hunts other organisms
  10. 16. Removal of soil by wind or water
  11. 17. An organism that eats plants and animals
  12. 19. The natural home of an organism
  13. 20. Degradation of fertile land into desert
  14. 21. The process plants use to make food from sunlight
  15. 26. Movement of water through Earth systems
  16. 28. All populations living together in an area