Biosphere Crossword

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Across
  1. 4. Symbiosis beneficial to both organisms
  2. 6. The hunting of other animals
  3. 7. The number of animals in an area
  4. 8. The action of breathing
  5. 12. The maximum population of a species in a community
  6. 15. A living factor in an ecosystem
  7. 16. The first species to an enter environment after primary succession
  8. 18. A meat eating organism
  9. 19. An animal that eats plants
  10. 20. Changing to survive your environment
  11. 22. The position of an organism in the ecosystem
  12. 23. A similar group of animals that can reproduce with each other
  13. 25. Abiotic and biotic factors working with each other
  14. 26. A form of symbiosis in which neither animal is harmed or benefits
  15. 27. An organism that eats producers and consumers
  16. 28. The different regions on the Earth’s surface
  17. 29. Two species that need one another to survive
Down
  1. 1. Non- living factors in an ecosystem
  2. 2. The place where an organism makes its home
  3. 3. Different species inside an ecosystem
  4. 5. A factor in an environment that limits a population
  5. 6. The process in which plants use the sun to make food
  6. 9. An organism that eats dead organisms
  7. 10. The creation of other organisms
  8. 11. When one environment goes through a change, creating a new one
  9. 13. An organism that makes its own food
  10. 14. Substances that takes part in or causes a change and reaction
  11. 15. A large natural community of plants, animals, and abiotic factors
  12. 17. An excessive level of algae in a pond
  13. 21. An animal that eats other organisms to get energy
  14. 24. Organisms that live on other organisms that harm or benefit the other