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