Introduction to Biology

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Across
  1. 2. process of natural changes
  2. 4. living thing with characteristics
  3. 5. science of life
  4. 6. addition of mass to an organism
  5. 8. production of offspring
  6. 9. a group of organisms that can breed with one another
Down
  1. 1. anything apart of the environment and causes some reaction
  2. 3. arranged in an orderly way
  3. 7. the reaction to a stimulus