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