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