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