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