Use the first letter of each clue

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Across
  1. 2. Mom's original name
  2. 4. Part of the trigonal crystal system
  3. 6. stream channels with flat floors and steep walls of sediment
  4. 8. Emerson knew early
  5. 9. This keeps the lights on
  6. 10. Ours should get the unwanted visitor
Down
  1. 1. Dr. Evil wanted this
  2. 3. Unfortunately we seem to have one in the house
  3. 5. If you're not early you're this
  4. 7. Not a monkey