nonrenwable

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Across
  1. 5. it's a black carbon during incomplete combustion
  2. 6. C in biomass recently in atmosphere is ____ Carbon
  3. 7. mixture of hydrocarbons
  4. 9. energy sources gathered by individuals for necessity are ____ energy sources
  5. 10. gas 'clean' fossil fuel - contains methane, ethane, etc
  6. 13. hydrocarbon, the primary component of natural gas, and a colorless, odorless, and flammable gas
  7. 15. energy sources that are bought/sold (coal) are _____ energy source
  8. 17. greenhouse gas that plays a significant role in the Earth's climate system
  9. 18. liquid fuel from biomass
  10. 19. Nonrenewable energy has a high ____ output
Down
  1. 1. fuel derived from biological material that became FOSSILIZED
  2. 2. precursor to coal
  3. 3. energy source w/finite source is _____ energy resource
  4. 4. Nonrenewable energy releases CO2 which is an air ________
  5. 8. type of coal - dark brown/black
  6. 11. Old C contain in fossil fuel is ____ carbon
  7. 12. type of coal >90% Carbon
  8. 14. chemical reaction between fossil fuel is fossil fuel ____
  9. 16. type of coal - brown coal
  10. 20. activity that doesn't change atmospheric CO2 is Carbon ____