taking care of resources

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Across
  1. 3. something that remains after the rest has been used.
  2. 5. things that take a long time to decompose.
  3. 7. break down in very small and simpler pieces that finally mixes with the soil.
  4. 9. resources that cannot be renewed in a natural way after they have been used up.
  5. 11. to cut a whole forest without caring.
  6. 14. waste material.
  7. 15. place where the trash or waste of a town is gathered or stored.
  8. 17. Material that is eliminated as no longer useful.
  9. 18. Elements or things needed by humans.
  10. 19. things that are able to decompose naturally in a short amount of time.
  11. 20. material that after being used or extracted, have the capacity to regenerate.
Down
  1. 1. to contaminate or throw garbage to the floor, water or air.
  2. 2. objects or materials made by humans.
  3. 4. Materials that humans take from nature.
  4. 6. not used in an appropriate way.
  5. 8. Leftovers of man-made materials.
  6. 10. Leftovers of living things.
  7. 12. out, something that is used up completely.
  8. 13. Materials that do not come directly from nature but are processed.
  9. 16. synonym of waste or trash.