saving the planet

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Across
  1. 5. people who act for a cause
  2. 6. sea
  3. 7. reuse waste
  4. 10. where you throw away trash
Down
  1. 1. temperature of the planet
  2. 2. a synonym of floating
  3. 3. space around us
  4. 4. something the activist fight for
  5. 8. science of the environment
  6. 9. food for whale