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