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