G2C26 -ous and -us

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Across
  1. 3. a plant that lives in the desert
  2. 6. well known
  3. 7. extra
  4. 9. a planet
  5. 10. toxic
  6. 12. a very large animal
  7. 13. huge
Down
  1. 1. giving
  2. 2. math
  3. 4. a live performance with talented people and animals
  4. 5. not safe
  5. 8. a feeling of anxiety
  6. 11. to pay close attention