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