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