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