Biodiversity

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Across
  1. 1. Most numerous vertebrate animals
  2. 3. Study of interactions among organisms and their environment
  3. 6. Process that cleanses water
  4. 8. Natural environment of an organism
  5. 11. Provides natural services like soil fertility
  6. 12. Dominated by flowering plants
  7. 15. Areas with extremely high biodiversity under threat
  8. 16. Animals without backbones
  9. 19. Includes plants, fungi, and animals
  10. 20. Estimated number of species of plants on Earth
  11. 21. Variety of all forms of life on Earth
  12. 22. Variety of ecosystems or ecological diversity
  13. 23. Component of biodiversity that includes genetic diversity
  14. 24. Source of food and energy, including water and clean air
Down
  1. 2. Interaction between different organisms living closely
  2. 4. Microscopic life forms such as bacteria
  3. 5. Groups of organisms that can reproduce together
  4. 7. Variety of species in a specific area
  5. 9. Changes in organisms to survive in their environment
  6. 10. Process by which organisms make energy
  7. 13. Species found only in one specific location
  8. 14. Remains of ancient organisms
  9. 17. Medicines derived from microorganisms
  10. 18. Flowering plants that dominate plant species