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