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