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