Biology Crossword Puzzle

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Across
  1. 5. natural changes in the life of an organism
  2. 6. Living things arranged in an orderly way
  3. 7. A reaction made by an organism
  4. 8. Regulation of an organism's internal conditions
  5. 10. Addition of mass on an organism
Down
  1. 1. The science of life
  2. 2. A group of living things that can breed with each other
  3. 3. Production of offspring
  4. 4. The reaction to the Stimulus
  5. 9. Anything that has the characteristics of life