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