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