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