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