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