Puzzle #1

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Across
  1. 3. A (generally human) male who begets a child
  2. 4. Belonging to; possessed; proper to.
  3. 7. A physical ailment; an illness.
  4. 8. A relatively long, wide and thin piece of any material, usually wood or similar, often for use in construction or furniture-making.
  5. 9. One whose activities make use of the scientific method.
Down
  1. 1. To change with a specific direction, progress.
  2. 2. A strong wind.
  3. 3. An end; the end of anything.
  4. 5. An English unit of land area (symbol: a. or ac.)
  5. 6. A solution to a problem.