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