Puzzle #16

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Across
  1. 1. One of the many pieces of paper bound together within a book or similar document.
  2. 4. Sick people in general as a group.
  3. 5. A thing that has physical existence.
  4. 7. To happen or take place.
  5. 8. One whose activities make use of the scientific method,
  6. 9. A single thickness of some material covering a surface.
Down
  1. 2. A mother of someone's parent.
  2. 3. To contend in physical conflict, either singly or in war, battle etc.
  3. 6. Chiefly; for the most part.
  4. 9. To be alive; to have life.