Biosphere Crossword

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Across
  1. 2. a natural environment of an organism
  2. 4. inhabitants of a place
  3. 6. a relationship between organisms where on lives as a parasite
  4. 9. an abundant accumulation of nutrients that supports organisms
  5. 13. a complex biotic community characterized by distinct animal or plant species
  6. 14. a social group with common cultural heritage
  7. 15. maximum number of organisms of a particular species
  8. 18. a hardy species first to colonize
  9. 21. a form modified to fit a changed environment
  10. 22. a beneficial relationship between two species
  11. 24. a system of interconnected elements formed by interactions
  12. 25. an organism requiring organic compounds for food
  13. 27. class of individuals having common characteristics
  14. 28. predatory behavior
  15. 29. pertaining to life
  16. 30. place appropriate for a person or thing
Down
  1. 1. living together of two dissimilar organisms
  2. 3. eating both plants and animals
  3. 5. an environmental factor that limits population
  4. 7. the process by which plants create food
  5. 8. the absence of life of living organisms
  6. 10. the ecosystem compromising the entire earth
  7. 11. a relationship between 2 species living without damage
  8. 12. an organism that forms nutrition from simple inorganic substances
  9. 14. an animal that eats flesh
  10. 16. an animal that feeds on dead organic matter
  11. 17. inhalation and exhalation of air
  12. 19. the coming of one person or thing after another
  13. 20. substance obtained from another substance through change
  14. 23. a substance that takes part in and changes during a reaction
  15. 26. an animal that feeds on plants