Environmental Engineering

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Across
  1. 3. Acidic water flowing from abandoned mines (2 words)
  2. 4. Fuel source that cannot be replaced
  3. 6. Increase in Earth’s average temperature (2 words)
  4. 10. Resources that will eventually run out (2 words)
  5. 12. Gas that contributes to global warming (2 words)
  6. 15. A natural resource that can be replaced by nature
Down
  1. 1. Harmful substance in the air
  2. 2. Gas released from vehicles due to incomplete combustion (2 words)
  3. 5. Engineers who protect and restore the environment (2 words)
  4. 7. Destruction of Earth’s surface by human activity (2 words)
  5. 8. Materials that exist naturally in the environment (2 words)
  6. 9. monoxide Poisonous gas that can build up in homes (2 words)
  7. 11. Trapped heat in Earth’s atmosphere that warms the planet (2 words)
  8. 13. Trash disposal areas that produce methane
  9. 14. Chemicals used to kill insects