Anything goes

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Across
  1. 4. carbon free, steady way to make electricity
  2. 5. one of the worst presidents, from PA
  3. 7. the "dismal" science, studies flow of money
  4. 10. country with the most vegetarians
  5. 11. largest animal
  6. 12. distance light travels in one year
Down
  1. 1. y in roygbiv
  2. 2. most venemous snake
  3. 3. force created by attraction of matter to matter
  4. 6. closest nuclear facility, near King of Prussia mall
  5. 8. best president from Hawaii
  6. 9. pirates disease from insufficient vitamin c loose teeth
  7. 11. only flying mammal Covid came from them