Wind

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Across
  1. 3. that flow in the Earth's equatorial region
  2. 7. Cold air
  3. 8. distribute heat around Earth.
  4. 9. found at the north and south poles
Down
  1. 1. Differences in density caused
  2. 2. Happened in the day
  3. 4. Hot air
  4. 5. winds from the west toward the east
  5. 6. Wind in a small area.