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