Environment Crossword

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Across
  1. 3. the plants of a given region
  2. 4. gas or smoke which is usually dangerous
  3. 5. the type of environment in which an organism normally lives
  4. 8. produced without artificial chemicals
  5. 10. organisms having some common qualities; kind or type
  6. 11. remove the trees from
  7. 12. a situation where a lifeform does not exist anymore
Down
  1. 1. amount of CO2 produced by a person or company’s activity
  2. 2. something than can't be naturally replaced as fast as it is used
  3. 6. substance that improves the growth and productiveness of plants
  4. 7. a colorless gas that acts as a screen for ultraviolet radiation
  5. 9. unwanted or unusable material, substances, or by-products