Fossil fuels
Starter
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BURNING
CAPROCK
CHEMICAL
COAL
ENERGY
FIRE
FOSSILS
FUEL
HEAT
HEAT
LIGHT
OIL
PETROL
REMAINS
SMOKE
| O | L | I | G | H | T | X | R | N |
| G | N | I | N | R | U | B | L | L |
| K | T | A | E | H | L | A | E | E |
| C | E | L | A | O | C | I | K | U |
| O | J | S | L | I | S | S | O | F |
| R | W | I | M | B | Y | R | M | I |
| P | R | E | M | A | I | N | S | R |
| A | H | T | Y | G | R | E | N | E |
| C | P | E | T | R | O | L | E | F |
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