renewable sources VS non renewable sources

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Across
  1. 4. what oil and coal have
  2. 6. dioxide what coal and oil released into the air
  3. 7. the word for underground Heating and Cooling
  4. 8. this comes from the sun
  5. 9. what we fight over in the Middle East
  6. 10. the word for something that cannot be used again
Down
  1. 1. can be used over and over
  2. 2. is clean energy but not a renewable resource
  3. 3. gases the stuff in are that is heating up the Earth
  4. 4. we burn this for most of our electricity
  5. 5. uses dead things to make electricity