scientific investigation Crossword

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Across
  1. 2. Unchanged
  2. 5. Ending
  3. 7. Estimate
  4. 8. Objects
  5. 10. Information
  6. 11. Test
  7. 15. Guess
Down
  1. 1. Detect
  2. 3. Manage
  3. 4. Separating
  4. 6. Discovery
  5. 9. variable- Change
  6. 12. Doubt
  7. 13. variable- Measure
  8. 14. Answer