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