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