Nature

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Across
  1. 3. using special force or stress
  2. 7. steep
  3. 8. a group of trees
  4. 11. straps that guide a horse
  5. 13. an unexpected meeting
  6. 14. protection of natural resources
  7. 15. impressive
Down
  1. 1. when it's cold outside
  2. 2. scattered remains of something
  3. 4. maintaining somethings originality
  4. 5. a person who studies nature
  5. 6. using a lot of energy
  6. 9. remaining still for a photo
  7. 10. a group of people living at the same time
  8. 12. showing a sign