Mount Everest crossword

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Across
  1. 3. Used as a temporary replacement
  2. 4. One who looks at things most positively; a cheerful, helpful person
  3. 7. To block or defeat the plans or efforts of
  4. 9. Something that attracts
  5. 10. The path that must be followed to get to a place
  6. 14. A great mass of ice, earth, or snow mixed with rocks sliding down a mountain.
  7. 15. To defeat
Down
  1. 1. The highest part; the top
  2. 2. A heavy snowstorm with strong winds
  3. 5. Short and to the point
  4. 6. A call to take part in a contest
  5. 8. A deep, narrow opening in rock caused by a split or a crack
  6. 11. Earlier, happening before
  7. 12. Unwisely bold or daring
  8. 13. Running straight up and down; upright