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