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