Biology section 1.1

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Across
  1. 1. results in the addition of mass to an organism
  2. 5. must be the same _____ to produce offspring
  3. 6. process of natural changes
  4. 7. the science of life
  5. 9. something that causes a reaction by the organism
  6. 10. what living things display
  7. 11. results from changes
Down
  1. 2. production of offspring
  2. 3. the reaction to a stimulus
  3. 4. necessary for an organisms internal conditions to work
  4. 8. has or had living characteristics