My own

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Across
  1. 3. could be a triangle, could be a square
  2. 4. pickles sealed permanently
  3. 5. nucleus
  4. 8. we’d die if we didn’t breathe this
  5. 9. grow in free oxygen
  6. 10. helps us get better when sick
Down
  1. 1. tartar control
  2. 2. contains milk and phosphate
  3. 6. picture frame
  4. 7. the yumminess we scrape
  5. 8. not made up