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