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 | C | Y |
| G | H | R | L | I | G | H | T | Y |
| N | H | E | U | S | L | E | P | L |
| I | Y | M | M | L | A | A | E | T |
| N | G | A | X | I | O | T | T | J |
| R | R | I | O | S | C | L | R | K |
| U | E | N | W | S | I | A | O | B |
| B | N | S | M | O | K | E | L | S |
| G | E | R | I | F | U | E | L | M |
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