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