Biology 1.1

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Across
  1. 3. living things with certain characteristics
  2. 4. group of organisms bred with one another
  3. 5. production of offspring
  4. 7. process of natural changes
  5. 8. class where people study living things
Down
  1. 1. arranged in an orderly way
  2. 2. reaction to a stimulus
  3. 6. addition of mass to an organism