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