Fossil Fuels
Introducing energy resources
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BUTANE
CHEMICAL
COAL
DIESEL
ENERGY
FOSSIL
FUEL
GAS
KEROSENE
LIQUID
ORGANIC
PARAFFIN
PEAT
PETROL
PETROLEUM
PROPANE
RENEWABLE
RESOURCE
| L | O | R | G | A | N | I | C | O | A | L |
| I | E | N | E | R | G | Y | Q | A | N | B |
| Q | T | L | I | S | S | O | F | T | I | Z |
| U | A | Q | B | S | A | G | U | L | F | E |
| I | V | P | E | A | T | B | E | A | F | C |
| D | G | D | F | I | W | A | L | C | A | R |
| E | N | E | S | O | R | E | K | I | R | U |
| L | E | S | E | I | D | T | N | M | A | O |
| F | M | U | E | L | O | R | T | E | P | S |
| P | R | O | P | A | N | E | R | H | R | E |
| C | E | N | A | T | U | B | T | C | M | R |
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