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