The Study of Life

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Across
  1. 2. genetic change over a long period of time
  2. 3. smallest unit of life
  3. 6. a living thing
  4. 10. many celled organism
  5. 11. a group of closely related organisms
  6. 13. food
  7. 14. single celled organism
  8. 15. a natural community
Down
  1. 1. maintaining normal body conditions
  2. 4. genetic instruction manual
  3. 5. variety of life
  4. 7. chemical processes or reactions in the body
  5. 8. the study of life
  6. 9. everywhere life exists
  7. 12. organized parts that work together