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