Invisible Alligators Crossword 2

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Across
  1. 2. to make a soft, light sound because parts of something are touching or rubbing against each other
  2. 4. to fail to be present for (something)
  3. 5. the hard covering on the foot of an animal
  4. 6. math that uses numbers and letters
Down
  1. 1. a stop to (something) – to stop something
  2. 3. cannot be seen
  3. 5. enough to want no more of something