Gaby, Unit 1-9 ESS Crossword

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Across
  1. 3. – Linear flow of energy in an ecosystem.
  2. 5. – A group of individuals who share common characteristics.
  3. 7. – Conservation method within the natural habitat.
  4. 8. – Extracting natural gas by breaking rock formations.
  5. 9. – Development of an ecosystem over time.
  6. 12. – Growth and development of cities.
  7. 15. – Build-up of salt in soil.
  8. 16. – Amount of CO₂ emitted by a person or group.
  9. 18. – Resource use that avoids depletion.
  10. 24. – Process that warms the Earth’s surface.
  11. 26. – Meeting needs without compromising future generations.
  12. 29. – Reprocessing waste materials for reuse.
  13. 30. – Action to reduce climate change impacts.
  14. 31. – Over-enrichment of water with nutrients.
  15. 32. – Non-renewable energy source from ancient organisms.
  16. 33. – A person’s view on environmental issues.
  17. 34. – Agreement to control trade in endangered species.
  18. 35. – Things that enter a system.
  19. 36. – Reliable and affordable energy supply.
  20. 38. – Non-living factors in an ecosystem.
  21. 39. – Organism that converts sunlight into energy.
Down
  1. 1. – Organism that breaks down dead material.
  2. 2. – Tool used to predict environmental effects of a project.
  3. 4. – Protection and management of biodiversity.
  4. 6. – Ability of a surface to reflect sunlight.
  5. 10. – Type of farming without synthetic chemicals.
  6. 11. – Harvesting aquatic species at sustainable levels.
  7. 13. – Reliable access to sufficient, nutritious food.
  8. 14. – Total mass of living organisms.
  9. 17. – Resource that cannot be replaced quickly.
  10. 19. – Variety of life in an ecosystem.
  11. 20. – Ideal soil mix for farming.
  12. 21. – Measure of human impact on nature.
  13. 22. – Movement of nutrient-rich water to the surface.
  14. 23. – Underground layer of water-bearing rock.
  15. 25. – Energy harnessed from the sun.
  16. 27. – A set of interrelated parts working together.
  17. 28. – Farming of aquatic organisms.
  18. 33. – Species at serious risk of extinction.
  19. 37. – Cultivation of a single crop over a large area.