environment

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Across
  1. 2. not existing any more.
  2. 4. things that make water, air, and the ground unclean.
  3. 5. the process of changing waste materials such as newspapers and bottles so that they can be used again.
  4. 7. things that you throw away because they are no longer useful, such as old food, paper or plastic used for wrapping things, and empty containers.
  5. 9. material that people throw away because they do not want or need it any more.
Down
  1. 1. smoke or gas that has an unpleasant smell, especially harmful smoke or gas.
  2. 3. things such as pieces of paper that people have dropped on the ground in a public place, making it untidy.
  3. 6. warming the slow increase in the temperature of the Earth caused partly by the greenhouse effect increasing the amount of carbon dioxide in the atmosphere.
  4. 8. polluted air that is a mixture of smoke and fog.