WEEK 14

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Across
  1. 4. protective headgear
  2. 5. path something takes around a planet
  3. 7. layer of gases around a planet
  4. 8. outside or top layer of something
  5. 9. something to learn more
  6. 10. gas people need to breathe
Down
  1. 1. or machines needed for a job
  2. 2. mixture of gases we breathe
  3. 3. safe place that protects you
  4. 6. force that pulls things down