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