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