Sub Crossword

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Across
  1. 2. transportation under the ground
  2. 3. below human
  3. 6. transportation under the water
  4. 7. below the freezing temperature
  5. 9. a group within or below the whole group
  6. 12. to draw or pull below
Down
  1. 1. to bring under control
  2. 2. plunge or push under
  3. 4. below normal conditions
  4. 5. a heading below the main idea
  5. 7. below a standard level
  6. 8. a title below the title or within the picture
  7. 9. below zero
  8. 10. layer of dirt under the grass
  9. 11. to send under