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