Unit One Vocabulary

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Across
  1. 5. the thin layer of life on the earth
  2. 6. everything that surrounds us including living things and man made products.
  3. 7. the study how humans effect the environment
  4. 10. a resource that can be replaced as it is used
  5. 11. any natural substance that can be used by living things
Down
  1. 1. when the population grows faster than the environment can support
  2. 2. the introduction of waste material or harmful chemicals into the environment
  3. 3. a world where people can live and have all the resources they need for generations to come
  4. 4. an increase in the earth's temperature as a result of trapped carbon dioxide
  5. 8. a resource that cannot be replaced
  6. 9. when people use resources faster than they can be replaced