Biology: Unit 1

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Across
  1. 2. group of organisms that can breed and produce offspring
  2. 3. System for maintaining the barrier between the inside of an organism and the external environment
  3. 6. Provides electrical communications
  4. 8. A factor that can change in an experiment
  5. 10. System that regulates hormones
  6. 12. multiple populations living in the same region
  7. 16. System that protects the body from microbes
  8. 18. a group of the same type of organisms living together in the same place
  9. 24. Plant and animal communities located in the same geographic area with the same climate
  10. 25. Information gained from observations
  11. 28. A factor that does not change
  12. 30. Made by combining what you know and what you have learned
  13. 31. the regulation of an organism's internal environment
  14. 33. Arranged in an orderly way
  15. 34. Mass increases, increases the amount of the number of cells
  16. 35. Direct method of gathering information in an orderly way
  17. 36. Causes a reaction by the organism
Down
  1. 1. group of cells that work together to do a specific function
  2. 4. Investigates a phenomenon in a controlled way
  3. 5. The reaction to the stimulus
  4. 7. tissues that work together to perform a specific function
  5. 9. all of the ecosystems on a planet
  6. 11. Production of offspring
  7. 13. System responsible for producing offspring
  8. 14. Testable explanation of a situation
  9. 15. basic building block of life
  10. 17. Provides movement
  11. 19. Process of natural changes throughout life
  12. 20. System that involves blood flow
  13. 21. Bones
  14. 22. the job that the structure does for the organism
  15. 23. System required for gas exchange
  16. 26. the inherited characteristics that results from changes to a species over time
  17. 27. System responsible for liquid excretion
  18. 29. System responsible for absorption of nutrients
  19. 32. Anything that has all the characteristics of life
  20. 33. a group of similar organ systems that work together to perform a specific function