VOCABULARY - UNIT 2

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Across
  1. 3. a gradual increase in world temperatures caused mainly by pollution
  2. 4. fuels, such as gas, coal, and oil, that were formed underground from plant and animal remains millions of years ago
  3. 5. damage caused to water, air, etc. by harmful substances or waste
  4. 7. a type of animal or plant that might stop existing because there are only a few of that type alive
  5. 9. to sort and collect rubbish in order to treat it and produce useful materials that can be used again
Down
  1. 1. the process of finding information, a place, or an object, especially for the first time, or the thing that is found
  2. 2. energy that is produced using the sun, wind, etc., or from crops, rather than using fuels such as oil or coal
  3. 6. waste material or things that are no longer wanted or needed
  4. 8. something that has never been made before, or the process of creating something that has never been made before