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