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