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