Environment Crossword

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Across
  1. 4. layer of gases that surround the earth
  2. 6. increase in the proportion of people living in towns and cities
  3. 8. When talking about energy sources, one that is not depleted when used
  4. 10. close look at the links between people and the natural and social world.
Down
  1. 1. materials occurring naturally in our environment from which we can make things for economic gain
  2. 2. The surroundings or conditions in which a person, animal, or plant lives.
  3. 3. A gradual increase in the overall temperature of the earth’s atmosphere attributed to an increase in carbon dioxide and other pollutants
  4. 5. presence in or introduction into the environment of a substance which has harmful or poisonous effects
  5. 7. A colorless and odorless gas that is life-supporting
  6. 9. weather conditions in an area over a period of time