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