Biology Crossword

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Across
  1. 2. fuel: natural gas
  2. 6. single cell organisms
  3. 8. the study of living organisms
  4. 12. this is the role of an organism within an ecosystem
  5. 13. i benefit from another organism without affecting it
  6. 15. populations of different species living in a habitat
  7. 16. members of a species living in a habitat
  8. 19. two organisms of different species that benefit from each other
  9. 20. where a particular organism lives
  10. 21. a group of organisms having many characteristics in common
Down
  1. 1. shell: the outside part of an atom
  2. 3. a developing offspring that is unborn or unhatched
  3. 4. i produce food by photosynthesis
  4. 5. community of living organisms and their physical environment
  5. 7. single cell food absorbing bacteria
  6. 9. helps absorbs fats
  7. 10. acid: i am a building block for proteins
  8. 11. the surroundings in which a person lives
  9. 13. i can only be seen through a microscope
  10. 14. the highest taxonomic kingdom
  11. 17. i live and feed off another organism
  12. 18. yeast is this kind