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