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
| C | R | B | U | T | A | N | E | C | K | F |
| E | C | I | N | A | G | R | O | H | R | E |
| S | M | U | E | L | O | R | T | E | P | N |
| L | E | S | E | I | D | K | N | M | A | A |
| E | C | R | U | O | S | E | R | I | R | P |
| F | G | Y | I | A | W | R | X | C | A | O |
| U | O | X | G | A | N | O | L | A | F | R |
| E | L | S | B | R | D | S | A | L | F | P |
| L | W | L | S | Q | E | E | O | Q | I | E |
| J | E | P | X | I | K | N | C | A | N | A |
| D | I | U | Q | I | L | E | E | U | Y | T |
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