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