Prefix Sub-

123456789
Across
  1. 2. to exist; to use something to survive
  2. 3. The title that comes after/ under the main title of a book.
  3. 4. less than human
  4. 6. when you take away from another number
  5. 7. under the tropics
  6. 8. When something becomes less strong.
  7. 9. When something is under the sea.
Down
  1. 1. when you are beneath your conscious mind
  2. 3. A railroad that runs underground.
  3. 5. When something or someone is under water.
  4. 7. When you force others to obey.