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