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