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