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