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