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 | F | T | H | M | B |
| A | H | R | U | O | H | E | X | U |
| P | O | E | O | S | G | A | P | R |
| R | L | M | M | S | I | T | E | N |
| O | Z | A | W | I | L | D | T | I |
| C | F | I | S | L | C | I | R | N |
| K | I | N | U | S | J | A | O | G |
| Y | R | S | M | O | K | E | L | W |
| Q | E | Y | G | R | E | N | E | U |
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