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