arab idiots

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Across
  1. 1. organisms that require a ready made source of food
  2. 4. relationship between two organisms living closely together where each benefits the other
  3. 5. the study of how organisms interact with one another in an environment
  4. 6. relationship between two organisms where one organisms lives on or in the other and feeds off it
  5. 9. a non living factor of the environment
  6. 11. all the factors in an organisms surroundings that affect it
  7. 12. a major regional or global living community characterized by the domain organisms and climate
Down
  1. 1. a relationship betwen two organisms when one gains and the other is unharmed
  2. 2. a place where plants and animals form a balanced environment with their physical surroundings
  3. 3. a relationship between two organisms where one organism kills and eats the other
  4. 7. where an organism lives
  5. 8. a living factor of the environment
  6. 10. an organism that creates food for its community