Our World

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Across
  1. 2. an unnecessary or wrong use of money, time, energy, abilities, etc.
  2. 4. that they can be used again.
  3. 6. the process of damaging the air, water, or land
  4. 8. a long time.
  5. 12. not now existing.
  6. 13. covered with water especially in a way that causes problems
  7. 15. things that you throw away because they are no longer useful,
  8. 16. to be changed from a solid substance into a liquid.
Down
  1. 1. the process of changing waste materials such as
  2. 3. a mixture of smoke, gases and chemicals, especially in cities, that makes the atmosphere difficult to breathe and harmful for health.
  3. 5. a old food, paper or plastic.
  4. 6. to keep something safe, protected, or in good condition
  5. 7. the ground in a public place, making it untidy.
  6. 9. things such as pieces of paper that people have dropped
  7. 10. to keep something in a safe place until you need to use it.
  8. 11. chemicals or other substances.
  9. 14. rules and regulations set up by a government.