Biology Crossword

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Across
  1. 3. a proposition(s)set forth as an explanation
  2. 8. the ecosystem comprising the entire Earth and the living organisms that inhabit it
  3. 10. a test, trial, or tentative procedure
  4. 12. any basic process of organic functioning or operating
  5. 14. the study of nature
  6. 17. the tendency of a system to maintain internal stability
  7. 18. a system of moral principles
  8. 19. capable of being changed or altered
Down
  1. 1. something that incites to action or exertion or quickens action
  2. 2. doubt
  3. 4. an act of instance of noticing or perceiving
  4. 5. oblique or diagonal line of direction
  5. 6. the science of heredity
  6. 7. a scientific or industrial process
  7. 9. an answer or reply as in words or in some action
  8. 11. genetics
  9. 13. the science of life or living matter in all forms
  10. 15. body of facts, information
  11. 16. the final decision
  12. 20. the branch of biology dealing with the relations and interactions between organisms and their environment