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