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