Isaac's crossword puzzel

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Across
  1. 4. harms host
  2. 8. study of organisms
  3. 11. mushrooms and single yeast
  4. 13. a small organism
  5. 14. a shot
Down
  1. 1. the black plague is a
  2. 2. simplest kind of life form
  3. 3. species that are best suited to there enviroment
  4. 5. the ability to reproduce
  5. 6. genetic material enclosed in a protein
  6. 7. the host of symbiotic relationships
  7. 9. a biological kid
  8. 10. farming
  9. 12. animal like protists