Vietnam Vocabulary

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Across
  1. 3. A large natural elevation above earth’s surface
  2. 6. A large natural stream of water
  3. 7. Something that a car produces when it burns fuel
  4. 8. A mound of earth that is naturally raised
  5. 9. Something that has a harmful effect to earth
  6. 11. The arts and other morals that groups of people follow
Down
  1. 1. The production or getting rid of something
  2. 2. A line separating two countries
  3. 4. A tiny portion of something
  4. 5. A gas that pollutes the air
  5. 10. A low area of land between two mountains or hills.