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