Unit 4

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Across
  1. 3. to remove water
  2. 4. an environment in which someone or something has difficulty surviving
  3. 7. the process of using het to kill microbes
  4. 8. sour liquid used to keep food from spoiling
  5. 12. dioxide colorless liquid used to keep food fresh
  6. 13. mixture of ingredients
  7. 17. making something free from bacteria or other living germs
  8. 19. natural world in which organisms live
  9. 20. decay of good
  10. 23. foods or substances that are combined to make a mixture
  11. 24. very old
Down
  1. 1. to take something away
  2. 2. public diagreement between groups of people with strong opposing views
  3. 5. badly or to an intense degree
  4. 6. causing illness or death if put into the body of an organism
  5. 9. microorganisms that cause disease
  6. 10. spoiled, impure, or harmful
  7. 11. benzoate odorless white powder used to keep food fresh
  8. 14. related to nutrients
  9. 15. scientist who explained how to kill microbes with heat
  10. 16. knowledge or facts
  11. 18. having to do with microbes
  12. 21. things done instead of other things
  13. 22. particular method of doing things