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