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