COL review cristina's puzzle

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Across
  1. 2. sameness/internal balance
  2. 4. obtains energy by eating other living things
  3. 5. DNA from two parents
  4. 8. processing and getting rid of waste/food
  5. 12. study of cell
  6. 13. a reaction to a stimulus
  7. 15. many celled
  8. 16. smallest unit of life
Down
  1. 1. single parent
  2. 3. study of life
  3. 6. MEATBALLS
  4. 7. study of animals
  5. 9. DNA instructions
  6. 10. one celled
  7. 11. obtains energy from the sun
  8. 14. an event that make you respond