Pollution Investigation

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Across
  1. 4. Ukraine city
  2. 7. hot planet
  3. 8. chill out
  4. 10. Japan city
  5. 11. asleep cycle
  6. 12. bird food
  7. 13. moon navigators
  8. 15. nasty ocean
Down
  1. 1. need that
  2. 2. not economics
  3. 3. big towers
  4. 5. pass it and double
  5. 6. tidepens
  6. 9. trash piles
  7. 14. Earth's air