Something Green Part 2

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Across
  1. 1. the distance around something
  2. 6. a semiconductor devise
  3. 7. able to be eaten
  4. 8. the main or strongest element
  5. 9. what makes plants green
  6. 11. apart from
  7. 12. something that's not known for certain
Down
  1. 2. the universe
  2. 3. functioning and working
  3. 4. careful thought
  4. 5. aware and paying attention
  5. 10. powders used to make colors