Tony's Crossword Puzzle!!!

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Across
  1. 5. man-made system to get water or land
  2. 6. a large raised area of flat land
  3. 7. an area's year round weather conditions
  4. 8. very dry
Down
  1. 1. a part or an area of something
  2. 2. used for support or help
  3. 3. able to grow life
  4. 4. the science or practice of farming and raising livestock.