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