Saving the planet

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Across
  1. 3. creating or imagining something
  2. 4. numbers
  3. 5. the planet
  4. 6. the food of whales
  5. 8. large fish
  6. 9. someone who defends a cause
  7. 10. a typical restaurant in America
Down
  1. 1. unknown things in plastic
  2. 2. the last meal of the day
  3. 7. product which pollutes the planet