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Across
  1. 3. Material commonly used in modern packaging.
  2. 4. Surroundings in which organisms live and interact.
  3. 7. Substances with a distinct molecular composition.
  4. 9. Protection and preservation of the natural environment.
  5. 11. Tiny pieces of plastic smaller than 5 millimeters.
  6. 13. Knowledge or perception of a situation or fact.
  7. 14. Process of converting waste materials into reusable objects.
  8. 16. Material that is not wanted and discarded.
  9. 17. Containers typically used to hold liquids, often made of plastic.
  10. 18. Relating to the sea or ocean.
  11. 19. Scattered fragments, typically of something wrecked or destroyed.
Down
  1. 1. Act of removing dirt, pollution, or impurities.
  2. 2. Waste material that is discarded as useless.
  3. 5. Vast body of saltwater covering most of Earth's surface.
  4. 6. Harmful or poisonous substance.
  5. 8. Introduction of harmful substances into the environment.
  6. 10. Capacity to endure and continue thriving without compromising future resources.
  7. 12. Environmental issue caused by human waste.
  8. 15. Community of living organisms in conjunction with the nonliving components of their environment.
  9. 16. Flora and fauna living in their natural environment.