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