1.

Fill in the blanks left in the classification of the fossil fuels.     

A. p q u v w x  Petroleum Coal Petroleum gas Bitumen Coal gas Coke     
B. p q u v w x  Coal Petroleum Coal gas Coke Petroleum gas Bitumen     
C. p q u v w x  Coal Petroleum gas Coal Charcoal Gasoline Coal tar     
D. p q u v w x  Petroleum Coal Gasoline Bitumen Natural gas Coke
Answer» C. p q u v w x  Coal Petroleum gas Coal Charcoal Gasoline Coal tar     


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