Geography

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Across
  1. 4. Low air pressure and make people feel uncomfortable
  2. 5. seperate two lands
  3. 6. It's hard to survive but there's still a lot of lives
Down
  1. 1. moves slowly and dispearing gradually
  2. 2. Different altitudes have different climates
  3. 3. flat and endless
  4. 5. the largest area