Essay helpful words

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Across
  1. 3. Substances needed for growth and health
  2. 7. The state of being safe or protected
  3. 8. To remove something completely
  4. 9. To trip or lose balance while walking
  5. 13. To shake because of fear, cold or nervousness
  6. 15. Strange or difficult to explain
Down
  1. 1. Very strong or powerful
  2. 2. Worried or nervous
  3. 4. Containing substances needed for good health
  4. 5. To stop something from happening
  5. 6. The body's ability to fight diseases
  6. 10. To produce young animals or insects
  7. 11. A place that gives protection
  8. 12. Suddenly surprised or frightened
  9. 14. Money spent on things