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