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