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