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