Living Things Crossword Puzzle

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Across
  1. 2. Grouping of similar species
  2. 3. Organism that catches sunlight.
  3. 4. Changes over time.
  4. 7. Any change in the environment.
  5. 9. Chemical reaction to break down materials.
  6. 10. Process of change of a cell.
  7. 11. The basic unit of living things.
  8. 15. A living thing.
  9. 16. A unicellular organism
Down
  1. 1. Consisting of many cells.
  2. 5. Made of a single cell.
  3. 6. The process of grouping things.
  4. 8. Organism's internal environment is stable.
  5. 12. Organism's cell the contains a nucleus.
  6. 13. Organism that can't make its own food.
  7. 14. Study of how living things are classified.