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