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