U4

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Across
  1. 4. to gather or collect a large amount of something
  2. 5. to protect something and prevent it from being lost or wasted
  3. 6. unpredictable or unexpected changes
  4. 9. to resist or survive something difficult
  5. 12. to face a difficult situation or person directly
  6. 14. the path that an object follows as it moves through space
  7. 15. an extreme shortage of food affecting many people
Down
  1. 1. to combine things into a stronger or more effective whole
  2. 2. to make a hole in something
  3. 3. certain to happen and impossible to avoid
  4. 5. a tropical plant with a starchy root that is used as food
  5. 7. the gradual wearing away of land, usually by water, wind, or ice
  6. 8. a mixture of different things that do not seem to belong together
  7. 10. the need for immediate action or attention
  8. 11. extremely important or necessary
  9. 13. to officially approve or confirm something, especially an agreement