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