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