General knowledge puzzles

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Across
  1. 2. this substance is thrown out into the air by volcanoes
  2. 4. Stars get most of their energy from fusion or fission
  3. 7. a collective noun for many bees together
  4. 8. the hardest known substance known to man
  5. 9. an animal which eats ants and termites
  6. 10. a creature having 8 eyes
  7. 12. this fruit is sweet and grows in Winter
  8. 14. a planet encircled by rings
Down
  1. 1. Furthest planet from the Earth
  2. 3. a cluster of stars together is known as
  3. 5. this compound is sweet and used as a sweetener
  4. 6. the main substance in stars
  5. 7. Our nearest star
  6. 11. the superlative of good
  7. 13. a dense forest with lots of vegetation and wildlife