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