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