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