Solve the Puzzle

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Across
  1. 1. - flatlands between hills and mountains.
  2. 2. - lower and less steep than mountains.
  3. 4. - the low, flat areas of Earth.
  4. 5. - higher than the areas surrounding them.
Down
  1. 1. - It ejects magma, volcanic ashes, and gases.
  2. 3. - a type of landform that is surrounded by water.
  3. 4. - this are high flatlands and separated from the other areas by steep slopes.