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