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