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