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