Alexandra Berk, Period 6

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Across
  1. 5. to destroy
  2. 6. nuclear energy
  3. 7. it's our duty
  4. 9. we're obligated to
  5. 13. electrical appliance
  6. 14. to throw out
  7. 16. going to use
  8. 17. collect
  9. 18. to develop
  10. 19. to discover
Down
  1. 1. going to be (place)
  2. 2. it's necessary
  3. 3. is going to be(adjective)
  4. 4. will speak
  5. 6. it's our responsibility
  6. 8. it's up to us
  7. 10. will improve
  8. 11. there is going to be (noun)
  9. 12. electric car
  10. 15. they should