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