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