Global Warming and Fossil Fuels

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Across
  1. 3. An effect of fossil fuels is that it lets out _____ gases.
  2. 7. Releasing harmful chemicals such as various types of gases can cause air ______ among other things.
  3. 8. The primary greenhouse gas responsible for global warming is __(2 words)__
  4. 10. plants were subjected to extreme heat and pressure for
  5. 11. years to form.
  6. 13. of years.
Down
  1. 1. This is caused by poisonous gases like sulfur dioxide, and it corrodes buildings. (2 words)
  2. 2. Fossil fuels are a ______ energy source since they take millions
  3. 4. Carbon dioxide builds up in the earths atmosphere faster than the carbon cycle can handle, this is endangering us because it prevents the _______ of UV rays
  4. 5. Burning fossil fuels such as natural gases, coal and oil releases carbon dioxide as a __-____
  5. 6. the term used to describe the process in which the planet is heating up. (2 words)
  6. 9. The rock
  7. 12. A hard, black colored rock-like substance formed when