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