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 | A | L |
| I | L | E | N | E | R | G | Y | L |
| T | E | A | T | A | E | H | K | E |
| T | K | P | C | F | I | R | E | U |
| H | O | S | L | I | S | S | O | F |
| G | M | O | I | L | M | L | M | L |
| I | S | N | I | A | M | E | R | A |
| L | O | R | T | E | P | U | H | O |
| C | R | K | C | O | R | P | A | C |
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